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![ELISA: Mouse IL-21 ELISA Kit (Colorimetric) [NBP3-06779] - Samples were spiked with high concentrations of Mouse IL-21 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-06779_mouse-il-21-elisa-kit-colorimetric-132202416243480.jpg "ELISA: Mouse IL-21 ELISA Kit (Colorimetric) [NBP3-06779] - Samples were spiked with high concentrations of Mouse IL-21 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Mouse IL-21 ELISA Kit (Colorimetric) [NBP3-06779] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-06779_mouse-il-21-elisa-kit-colorimetric-43202495078.jpg)
![ELISA: Rat IL-21 ELISA Kit (Colorimetric) [NBP3-06780] - Samples were spiked with high concentrations of Rat IL-21 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-06780_rat-il-21-elisa-kit-colorimetric-132202416133691.jpg "ELISA: Rat IL-21 ELISA Kit (Colorimetric) [NBP3-06780] - Samples were spiked with high concentrations of Rat IL-21 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Rat IL-21 ELISA Kit (Colorimetric) [NBP3-06780] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-06780_rat-il-21-elisa-kit-colorimetric-4320248574372.jpg)
![ELISA: IL-21 ELISA Kit [NBP1-84816] - Standard curve](http://images.novusbio.com/fullsize/IL-21-ELISA-Kit-ELISA-NBP1-84816-img0001.jpg "ELISA: IL-21 ELISA Kit [NBP1-84816] - Standard curve")