Note: Mouseover a species abbreviation on the product page to display the fullname.
How can we help you?
![ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH [NBP3-12848] - A direct ELISA was performed using SARS-CoV-2 Spike recombinant proteins (RBD, S1, ECD) as coating antigen at 1 ug/mL and the anti-SARS-CoV-2 Spike RBD antibody (NBP3-12848) as the capture antibody, following by anti-cMyc-tag antibody at 1 ug/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5000 dilution. Detection range is from 0.3 ng/mL to 1000 ng/mL. SARS-CoV-2 Spike RBD Antibody, NBP3-12848 can detect spike RBD, S1 and ECD proteins at 2 ng/mL.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-RBD-Antibody-T4P5-H12-VHH-ELISA-NBP3-12848-img0001.jpg "ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH [NBP3-12848] - A direct ELISA was performed using SARS-CoV-2 Spike recombinant proteins (RBD, S1, ECD) as coating antigen at 1 ug/mL and the anti-SARS-CoV-2 Spike RBD antibody (NBP3-12848) as the capture antibody, following by anti-cMyc-tag antibody at 1 ug/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5000 dilution. Detection range is from 0.3 ng/mL to 1000 ng/mL. SARS-CoV-2 Spike RBD Antibody, NBP3-12848 can detect spike RBD, S1 and ECD proteins at 2 ng/mL.")
![ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH - Azide and BSA Free [NBP3-12848] - Figure 1 ELISA Validation with SARS-CoV-2 (COVID-19) Spike Trimer Proteins Antibodies: SARS-CoV-2 (COVID-19) Spike S1 RBD Antibody, . A direct ELISA was performed using SARS-CoV-2 Spike trimer recombinant proteins of WT, Omicron and Delta variants as coating antigen at 1 u/mL and the anti-SARS-CoV-2 (COVID-19) Spike S1 RBD antibody as the capture antibody, following by anti-cMyc-tag antibody (PM-7669) at 1 u/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5,000 dilution. Detection range is from 0.4 ng/mL to 900 ng/mL. SARS-CoV-2 (COVID-19) Spike S1 RBD Antibody, can detect spike trimer protein at 1.5 ng/mL.](http://images.novusbio.com/fullsize/nbp3-12848_llama-monoclonal-sars-cov-2-spike-rbd-antibody-t4p5-h12-vhh-2711202420392741.jpg)
![ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH - Azide and BSA Free [NBP3-12848] - Figure 1 ELISA Validation with SARS-CoV-2 (COVID-19) Spike Trimer Proteins of Omicron and Delta Variants Antibodies: SARS-CoV-2 Spike RBD Antibodies. A direct ELISA was performed using SARS-CoV-2 Spike Trimer recombinant proteins of Omicron and Delta variants as coating antigen at 1 u/mL and each of the 6 anti-SARS-CoV-2 Spike RBD antibodies as the capture antibody, following by anti-cMyc-tag antibody (PM-7669) at 1 u/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5,000 dilution. Detection range is from 0.3 ng/mL to 1000 ng/mL. SD9439, SD9441, and SD9503 bind spike proteins of omicron variant, but not delta variant; SD9511 and SD9437 bind spike proteins of delta variant, but not omicron variant; binds spike proteins of delta and omicron variants.](http://images.novusbio.com/fullsize/nbp3-12848_llama-monoclonal-sars-cov-2-spike-rbd-antibody-t4p5-h12-vhh-2711202419432256.jpg)
![ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH - Azide and BSA Free [NBP3-12848] - Figure 1 ELISA Validation with SARS-CoV-2 (COVID-19) Spike Trimer Proteins of Omicron and Delta Variants Antibodies: SARS-CoV-2 Spike RBD Antibodies. A direct ELISA was performed using SARS-CoV-2 Spike Trimer recombinant proteins of Omicron and Delta variants as coating antigen at 1 u/mL and each of the 6 anti-SARS-CoV-2 Spike RBD antibodies as the capture antibody, following by anti-cMyc-tag antibody (PM-7669) at 1 u/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5,000 dilution. Detection range is from 0.3 ng/mL to 1000 ng/mL. SD9439, SD9441, and SD9503 bind spike proteins of omicron variant, but not delta variant; SD9511 and SD9437 bind spike proteins of delta variant, but not omicron variant; binds spike proteins of delta and omicron variants.](http://images.novusbio.com/fullsize/nbp3-12848_llama-monoclonal-sars-cov-2-spike-rbd-antibody-t4p5-h12-vhh-2711202419392749.jpg)
![ELISA: SARS-CoV-2 Spike RBD Antibody (T4P5-H12) - VHH - Azide and BSA Free [NBP3-12848] - Figure 1 ELISA Validation with SARS-CoV-2 (COVID-19) Spike Trimer Proteins Antibodies: SARS-CoV-2 (COVID-19) Spike S1 RBD Antibody, . A direct ELISA was performed using SARS-CoV-2 Spike trimer recombinant proteins of WT, Omicron and Delta variants as coating antigen at 1 u/mL and the anti-SARS-CoV-2 (COVID-19) Spike S1 RBD antibody as the capture antibody, following by anti-cMyc-tag antibody (PM-7669) at 1 u/mL. Secondary: Goat anti-mouse IgG HRP conjugate at 1:5,000 dilution. Detection range is from 0.4 ng/mL to 900 ng/mL. SARS-CoV-2 (COVID-19) Spike S1 RBD Antibody, can detect spike trimer protein at 1.5 ng/mL.](http://images.novusbio.com/fullsize/nbp3-12848_llama-monoclonal-sars-cov-2-spike-rbd-antibody-t4p5-h12-vhh-271120242041458.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (5G12G11) - Gamma Variant, P.1, Brazil [NBP3-12856] - SARS-Cov-2 Spike P26S (Gamma Variant) Antibodies Specifically Detect Gamma Variant Spike S1 Protein in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike P26S (Gamma Variant) antibody, dilution: 200 and 1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-5G12G11-Gamma-Variant-P-1-Brazil-ELISA-NBP3-12856-img0003.jpg "ELISA: SARS-CoV-2 Spike Antibody (5G12G11) - Gamma Variant, P.1, Brazil [NBP3-12856] - SARS-Cov-2 Spike P26S (Gamma Variant) Antibodies Specifically Detect Gamma Variant Spike S1 Protein in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike P26S (Gamma Variant) antibody, dilution: 200 and 1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr.")
![Western Blot: SARS-CoV-2 Spike Antibody (5G12G11) - Gamma Variant, P.1, Brazil [NBP3-12856] - WB Validation of Gamma Variant Spike S1 Antibodies with SARS-CoV-2 Gamma Variant Spike S1 Protein. Loading: 50 ng of SARS-CoV-2 spike S1 proteins, including WT and Gamma variant (P.1). Detection Antibodies: Spike P26S (Gamma Variant) antibody, NBP3-12856, 1 ug/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr.SARS-CoV-2 Spike P26S (Gamma Variant) antibody specifically detects Gamma variant spike S1 protein, but not WT spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-5G12G11-Gamma-Variant-P-1-Brazil-Western-Blot-NBP3-12856-img0004.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (5G12G11) - Gamma Variant, P.1, Brazil [NBP3-12856] - ELISA Validation of Gamma Variant Spike S1 Antibodies with SARS-CoV-2 Gamma Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins WT and Gamma variant (P.1), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike P26S (Gamma Variant) antibody, NBP3-12856, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike P26S (Gamma Variant) antibody specifically detects Gamma variant spike S1 protein, but not WT spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-5G12G11-Gamma-Variant-P-1-Brazil-ELISA-NBP3-12856-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (5G12G11) - Gamma Variant, P.1, Brazil [NBP3-12856] - ELISA Validation of Gamma Variant Spike S1 Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides: WT and Gamma variant (P.1), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 26P antibody, NBP3-12856, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike P26S (Gamma Variant) antibody detects Gamma variant spike S1 peptide (26S), but not WT peptide (26P).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-5G12G11-Gamma-Variant-P-1-Brazil-ELISA-NBP3-12856-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (9F7E4) - Alpha Variant, B.1.1.7, UK [NBP3-11941] - Validation of Alpha Variant Spike Antibodies with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4C overnight. Detection Antibody: SARS-CoV-2 Spike antibody Alpha Variant (B.1.1.7) UK NBP3-11941, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibody: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. NBP3-11941 can specifically detect alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-9F7E4-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11941-img0004.jpg "ELISA: SARS-CoV-2 Spike Antibody (9F7E4) - Alpha Variant, B.1.1.7, UK [NBP3-11941] - Validation of Alpha Variant Spike Antibodies with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4C overnight. Detection Antibody: SARS-CoV-2 Spike antibody Alpha Variant (B.1.1.7) UK NBP3-11941, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibody: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. NBP3-11941 can specifically detect alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants.")
![Western Blot: SARS-CoV-2 Spike Antibody (9F7E4) - Alpha Variant, B.1.1.7, UK [NBP3-11941] - WB Validation of Alpha Variant Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein Loading: 50 ng of SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK). Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11941, 1 ug/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11941) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by WB.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-9F7E4-Alpha-Variant-B-1-1-7-UK-Western-Blot-NBP3-11941-img0003.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (9F7E4) - Alpha Variant, B.1.1.7, UK [NBP3-11941] - ELISA Validation of Alpha Variant Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11941, dilution: 0.3-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11941) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by ELISA.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-9F7E4-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11941-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (9F7E4) - Alpha Variant, B.1.1.7, UK [NBP3-11941] - ELISA Validation of Alpha Variant Spike Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11941, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11941) can specifically detect alpha variant spike S1 peptide (681H), but not WT peptide (681P).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-9F7E4-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11941-img0002.jpg)
![Sandwich ELISA: SARS-CoV-2 Spike S1 Antibody (SP185) [NBP3-07065] - Sandwich ELISA for SARS-CoV-2 Spike S1 Matched Pair Antibodies. Antibodies: SARS-CoV-2 (COVID-19) Spike Antibodies, NBP3-07065 and NBP3-26919. A sandwich ELISA was performed using SARS-CoV-2 Spike S1 antibody (NBP3-07065, 2ug/ml) as capture antibody, the Spike S1 recombinant protein as the binding protein, and the anti-SARS-CoV-2 Spike S1 antibody (NBP3-26919, 1ug/ml) as the detection antibody. Secondary: Mouse anti-human IgG HRP conjugate at 1:10000 dilution. Detection range is from 0.03 ng to 300 ng. EC50 = 1.58 ng.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-S1-Antibody-SP185-Sandwich-ELISA-NBP3-07065-img0001.jpg "Sandwich ELISA: SARS-CoV-2 Spike S1 Antibody (SP185) [NBP3-07065] - Sandwich ELISA for SARS-CoV-2 Spike S1 Matched Pair Antibodies. Antibodies: SARS-CoV-2 (COVID-19) Spike Antibodies, NBP3-07065 and NBP3-26919. A sandwich ELISA was performed using SARS-CoV-2 Spike S1 antibody (NBP3-07065, 2ug/ml) as capture antibody, the Spike S1 recombinant protein as the binding protein, and the anti-SARS-CoV-2 Spike S1 antibody (NBP3-26919, 1ug/ml) as the detection antibody. Secondary: Mouse anti-human IgG HRP conjugate at 1:10000 dilution. Detection range is from 0.03 ng to 300 ng. EC50 = 1.58 ng.")
![Sandwich ELISA: SARS-CoV-2 Spike S1 Antibody (SP185) [NBP3-07065] - Sandwich ELISA for SARS-CoV-2 Spike S1 Matched Pair Antibodies. A sandwich ELISA was performed using SARS-CoV-2 Spike S1 antibody (NBP3-07065, 2ug/ml) as capture antibody, a Spike S1 recombinant protein as the binding protein, and an anti-SARS-CoV-2 Spike S1 antibody (1ug/ml) as the detection antibody. Secondary: Streptavidin-HRP at 1:10000 dilution. Detection range is from 0.03 ng to 300 ng. EC50 = 1.96 ng](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-S1-Antibody-SP185-Sandwich-ELISA-NBP3-07065-img0002.jpg)
![Immunohistochemistry: SARS-CoV-2 Spike S1 Antibody (SP185) - Azide and BSA Free [NBP3-07065] - Validation of SARS-CoV-2 (COVID-19) Spike in COVID-19 Patient Lung.Immunohistochemical analysis of paraffin-embedded COVID-19 patient lung tissue using anti- SARS-CoV-2 (COVID-19) Spike antibody (3 ug/mL). Tissue was fixed with formaldehyde and blocked with 10% serum for 1 h at RT; antigen retrieval was by heat mediation with a citrate buffer (pH6). Samples were incubated with primary antibody overnight at 4C. A goat anti-rabbit IgG H&L (HRP) at 1/250 was used as secondary. Counter stained with Hematoxylin. Strong signal of SARS-COV-2 Spike protein was observed in the macrophages of COVID-19 patient lung, but not in non-COVID-19 patient lung.](http://images.novusbio.com/fullsize/nbp3-07065_rabbit-monoclonal-sars-cov-2-spike-s1-antibody-sp185-2711202419293820.jpg)
![ELISA: SARS-CoV-2 Spike S1 Antibody (SP185) - Azide and BSA Free [NBP3-07065] - Coating Antigen: SARS-CoV-2 full length spike proteins, including WT, UK variant (B.1.1.7), SA variant (B.1.135) and Brazil (P.1). Dilution: 1-3000 ng/mL. Incubate at 4C overnight.Detection Antibodies: SARS-CoV-2 Spike S1 Antibody, 0.1 ug/mL, incubate at RT for 1 hr.Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr.Spike S1 antibody cannot detect SA variant (B.1.135) and Brazil (P.1), both of which carry more mutations in RBD as compared to UK variant (B.1.1.7).](http://images.novusbio.com/fullsize/nbp3-07065_rabbit-monoclonal-sars-cov-2-spike-s1-antibody-sp185-271120241937754.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (1C3H9) [NBP3-12855] - SARS-Cov-2 Spike 26P Antibodies Detect Spike S1 Proteins of all Variants except Gamma Variant in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike 26P antibody, NBP3-12855, dilution: 200 and 1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-1C3H9-ELISA-NBP3-12855-img0003.jpg "ELISA: SARS-CoV-2 Spike Antibody (1C3H9) [NBP3-12855] - SARS-Cov-2 Spike 26P Antibodies Detect Spike S1 Proteins of all Variants except Gamma Variant in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike 26P antibody, NBP3-12855, dilution: 200 and 1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr.")
![Western Blot: SARS-CoV-2 Spike Antibody (1C3H9) [NBP3-12855] - ELISA Validation of Spike 26P Antibodies with SARS-CoV-2 Gamma Variant Spike S1 Protein. Loading: 50 ng of SARS-CoV-2 spike S1 proteins, WT and Gamma variant (P.1). Detection Antibodies: Spike 26P antibody, NBP3-12855, 1 ug/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike 26P antibody detects WT spike S1 protein, but not Gamma variant spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-1C3H9-Western-Blot-NBP3-12855-img0004.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (1C3H9) [NBP3-12855] - ELISA Validation of Spike 26P Antibodies with SARS-CoV-2 Gamma Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins of WT and Gamma variant (P.1), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike 26P antibody, NBP3-12855, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike 26P antibody detects WT spike S1 protein, but not Gamma variant spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-1C3H9-ELISA-NBP3-12855-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (1C3H9) [NBP3-12855] - ELISA Validation of Spike 26P Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides: WT and Gamma variant (P.1), 1 ug/mL, incubated at 4 C overnight. Detection Antibodies: SARS-CoV-2 26P antibody, NBP3-12855, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 spike 26P antibody detects WT peptide (26P), but not Gamma variant spike S1 peptide (26S).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-1C3H9-ELISA-NBP3-12855-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7A4D12) - Alpha Variant, B.1.1.7, UK [NBP3-12854] - ELISA Validation of Alpha Variant Spike Antibodies with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Alpha Variant Spike antibody, NBP3-12854, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 alpha variant spike antibody (NBP3-12854) can specifically detect alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants by ELISA.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7A4D12-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-12854-img0003.jpg "ELISA: SARS-CoV-2 Spike Antibody (7A4D12) - Alpha Variant, B.1.1.7, UK [NBP3-12854] - ELISA Validation of Alpha Variant Spike Antibodies with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Alpha Variant Spike antibody, NBP3-12854, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 alpha variant spike antibody (NBP3-12854) can specifically detect alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants by ELISA.")
![Western Blot: SARS-CoV-2 Spike Antibody (7A4D12) - Alpha Variant, B.1.1.7, UK [NBP3-12854] - WB Validation of P681H Mutant Specific Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein. Loading: 50 ng of SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK). Detection Antibodies: SARS-CoV-2 P681H Mutant Specific Spike antibody, NBP3-12854, 1 ug/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 P681H Mutant Specific Spike antibody (NBP3-12854) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by WB.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7A4D12-Alpha-Variant-B-1-1-7-UK-Western-Blot-NBP3-12854-img0004.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7A4D12) - Alpha Variant, B.1.1.7, UK [NBP3-12854] - ELISA Validation of P681H Mutant Specific Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Alpha Variant Spike antibody, NBP3-12854, dilution: 0.3-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 P681H Mutant Specific Spike antibody (NBP3-12854) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by ELISA.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7A4D12-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-12854-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7A4D12) - Alpha Variant, B.1.1.7, UK [NBP3-12854] - ELISA Validation of P681H Mutant Specific Spike Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 P681H Mutant Specific Spike antibody, NBP3-12854, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 P681H Mutant Specific Spike antibody (NBP3-12854) can specifically detect alpha variant spike S1 peptide (681H), but not WT peptide (681P).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7A4D12-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-12854-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7C11H11) - Alpha Variant, B.1.1.7, UK [NBP3-11942] - Validation of Alpha Variant Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4C overnight. Detection Antibody: SARS-CoV-2 Spike Antibody alpha variant (B.1.1.7) UK NBP3-11942, dilution: 1000 ng/mL, incubate at RT for 1 hr. Secondary Antibody: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. NBP3-11942 can specifically detect omicron and alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7C11H11-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11942-img0004.jpg "ELISA: SARS-CoV-2 Spike Antibody (7C11H11) - Alpha Variant, B.1.1.7, UK [NBP3-11942] - Validation of Alpha Variant Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 ug/mL, incubate at 4C overnight. Detection Antibody: SARS-CoV-2 Spike Antibody alpha variant (B.1.1.7) UK NBP3-11942, dilution: 1000 ng/mL, incubate at RT for 1 hr. Secondary Antibody: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. NBP3-11942 can specifically detect omicron and alpha variant spike S1 protein, but not spike S1 protein of WT and other tested variants.")
![Western Blot: SARS-CoV-2 Spike Antibody (7C11H11) - Alpha Variant, B.1.1.7, UK [NBP3-11942] - WB Validation of Alpha Variant Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein Loading: 50 ng of SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK). Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11942, 1 ug/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11942) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by WB.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7C11H11-Alpha-Variant-B-1-1-7-UK-Western-Blot-NBP3-11942-img0003.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7C11H11) - Alpha Variant, B.1.1.7, UK [NBP3-11942] - ELISA Validation of Alpha Variant Spike Antibodies with SARS-CoV-2 Alpha Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11942, dilution: 0.3-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11942) can specifically detect alpha variant spike S1 protein, but not WT spike S1 protein by ELISA.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7C11H11-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11942-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7C11H11) - Alpha Variant, B.1.1.7, UK [NBP3-11942] - ELISA Validation of Alpha Variant Spike Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides, including WT and alpha variant (B.1.1.7, UK), 1 ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11942, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11942) can specifically detect alpha variant spike S1 peptide (681H), but not WT peptide (681P).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7C11H11-Alpha-Variant-B-1-1-7-UK-ELISA-NBP3-11942-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7E3C5) - Delta Variant, B.1.617.2, India [NBP3-14793] - SARS-Cov-2 Spike P681R (Delta Variant) Antibodies Specifically Detect Delta Variant Spike S1 Protein in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike P681R (Delta Variant) antibody, NBP3-14793, 1 ug/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7E3C5-Delta-Variant-B-1-617-2-India-ELISA-NBP3-14793-img0004.jpg "ELISA: SARS-CoV-2 Spike Antibody (7E3C5) - Delta Variant, B.1.617.2, India [NBP3-14793] - SARS-Cov-2 Spike P681R (Delta Variant) Antibodies Specifically Detect Delta Variant Spike S1 Protein in an ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), mu variant (B.1.621), and omicron variant (B.1.1.529), 1 ug/mL, incubated at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike P681R (Delta Variant) antibody, NBP3-14793, 1 ug/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr.")
![ELISA: SARS-CoV-2 Spike Antibody (7E3C5) - Delta Variant, B.1.617.2, India [NBP3-14793] - ELISA Validation of Delta Variant Spike S1 Antibodies with SARS-CoV-2 Delta Variant Spike S1 Protein. Coating Antigen: SARS-CoV-2 spike S1 proteins, WT, Alpha and Delta variants, 1 ug/mL, incubated at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike P681R (Delta Variant) antibody, NBP3-14793, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike P681R (Delta Variant) antibody specifically detects spike S1 protein of Delta variant, but not WT and Alpha variant.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7E3C5-Delta-Variant-B-1-617-2-India-ELISA-NBP3-14793-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (7E3C5) - Delta Variant, B.1.617.2, India [NBP3-14793] - ELISA Validation of Delta Variant Spike S1 Antibodies with Mutant and WT Peptide. Coating Antigen: SARS-CoV-2 spike S1 peptides: WT, Alpha variant, and Delta variant, 1 ug/mL, incubated at 4C overnight. Detection Antibodies: SARS-CoV-2 delta spike P681R antibody, NBP3-14793, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr. Secondary Antibodies: Goat anti-mouse HRP at 1:5,000, incubated at RT for 1 hr. SARS-CoV-2 Spike P681R (Delta Variant) antibody detects Delta variant spike S1 peptide (681R), but not WT peptide (681P) and Alpha variant spike S1 peptide (681H).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-7E3C5-Delta-Variant-B-1-617-2-India-ELISA-NBP3-14793-img0003.jpg)
![Immunohistochemistry: SARS-CoV-2 Spike Antibody (7E3C5) - Delta Variant, B.1.617.2, India - BSA Free [NBP3-14793] - Validation of Spike in Delta Variant COVID-19 Patient Lung Tissue. Immunohistochemical analysis of paraffin-embedded patient lung tissue using anti-Spike P681R antibody at 20 ug/ml. Tissue was fixed with formaldehyde and blocked with 10% serum for 1 h at RT; antigen retrieval was by heat mediation with a citrate buffer (pH6). Samples were incubated with primary antibody overnight at 4C. A goat anti-rabbit IgG H&L (HRP) at 1/250 was used as secondary. Counter stained with Hematoxylin. Strong spike protein signal was observed in the Delta variant COVID-19 patient lung, but not in WT COVID-19 patient lung.](http://images.novusbio.com/fullsize/nbp3-14793_mouse-sars-cov-2-spike-mab-7e3c5-delta-variant-b-1-617-2-india-2711202419261828.jpg)
![ELISA: SARS-CoV-2 Spike Antibody - Alpha Variant, B.1.1.7, UK [NBP3-11931] - Examination of Alpha Variant Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT, alpha variant (B.1.1.7) UK, beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and mu variant (B.1.621), 1ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike Antibody Alpha Variant (B.1.1.7) UK, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. SARS-CoV-2 Spike Antibody Alpha Variant (B.1.1.7) UK can specifically detect alpha variant and Mu spike S1 protein, but not WT and other tested variants.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody---Alpha-Variant--B.1.1.7--UK-ELISA-NBP3-11931-img0003.jpg "ELISA: SARS-CoV-2 Spike Antibody - Alpha Variant, B.1.1.7, UK [NBP3-11931] - Examination of Alpha Variant Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT, alpha variant (B.1.1.7) UK, beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and mu variant (B.1.621), 1ug/mL, incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike Antibody Alpha Variant (B.1.1.7) UK, dilution: 200-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. SARS-CoV-2 Spike Antibody Alpha Variant (B.1.1.7) UK can specifically detect alpha variant and Mu spike S1 protein, but not WT and other tested variants.")
![Western Blot: SARS-CoV-2 Spike Antibody - Alpha Variant, B.1.1.7, UK [NBP3-11931] - Validation of UK Variant Spike Antibodies with SARS-CoV-2 UK Variant Spike S1 Protein Loading: 50 ng of SARS-CoV-2 spike S1 proteins, including WT and UK variant (B.1.1.7). Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11931, 1 ug/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11931) can specifically detect UK variant spike S1 protein, but not WT spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody---Alpha-Variant--B.1.1.7--UK-Western-Blot-NBP3-11931-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody - Alpha Variant, B.1.1.7, UK [NBP3-11931] - ELISA Validation of UK Variant Spike Antibodies with Mutant and WT Peptide Coating Antigen: SARS-CoV-2 spike S1 peptides, including WT and UK variant (B.1.1.7), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11931, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. Immunogen region of antibody NBP3-11931 includes site 681P that was mutated in B.1.1.7. SARS-CoV-2 Spike antibody (NBP3-11931) can specifically detect UK variant spike S1 peptide (681H), but not WT peptide (681P).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody---Alpha-Variant--B.1.1.7--UK-ELISA-NBP3-11931-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody - Alpha Variant, B.1.1.7, UK [NBP3-11931] - Validation of SARS-CoV-2 Spike Antibody Alpha Variant (B.1.1.7) with Mutant and WT Spike S1 Proteins. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT and UK variant (B.1.1.7), 1 ug/mL, incubate at 4 C overnight. Detection Antibodies: SARS-CoV-2 Spike antibody, NBP3-11931, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. SARS-CoV-2 Spike antibody (NBP3-11931) can specifically detect UK variant spike S1 protein, but not WT spike S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody---Alpha-Variant--B.1.1.7--UK-ELISA-NBP3-11931-img0004.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (CR3022) - Azide and BSA Free [NBP2-90980] - ELISA plate coated with SARS-CoV-2 Spike Glycoprotein (S1), His-Tag (Insect Cells; grey line) and SARS-CoV-2 Spike Glycoprotein (S2), His-Tag (Insect Cells; yellow line) at concentrations of 5 ug/ml. A 3-fold serial dilution from 41.6 ng/ml was performed using NBP2-90980; from 370 ng/ml for NBP3-11813 and from 10000 ng/ml for NBP3-11776. Human IgM and human IgA were HRP-conjugated and for the detection of human IgG1 a 1:4000 dilution of HRP-labelled anti-human IgG antibody was used.](http://images.novusbio.com/fullsize/nbp3-11813_human-monoclonal-sars-cov-2-spike-antibody-cr3022-7420252228560.png "ELISA: SARS-CoV-2 Spike Antibody (CR3022) - Azide and BSA Free [NBP2-90980] - ELISA plate coated with SARS-CoV-2 Spike Glycoprotein (S1), His-Tag (Insect Cells; grey line) and SARS-CoV-2 Spike Glycoprotein (S2), His-Tag (Insect Cells; yellow line) at concentrations of 5 ug/ml. A 3-fold serial dilution from 41.6 ng/ml was performed using NBP2-90980; from 370 ng/ml for NBP3-11813 and from 10000 ng/ml for NBP3-11776. Human IgM and human IgA were HRP-conjugated and for the detection of human IgG1 a 1:4000 dilution of HRP-labelled anti-human IgG antibody was used.")