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![Human CA19-9/Sialyl Lewis A ELISA Kit (Colorimetric) [NBP2-59963] - These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed](http://images.novusbio.com/fullsize/Human-CA19-9-ELISA-Kit-Colorimetric-NBP2-59963-img0001.jpg "Human CA19-9/Sialyl Lewis A ELISA Kit (Colorimetric) [NBP2-59963] - These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed")
![Human CA19-9/Sialyl Lewis A ELISA Kit (Colorimetric) [NBP2-59963] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp2-59963_human-ca19-9-sialyl-lewis-a-elisa-kit-colorimetric-3120248315919.png)