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![ELISA: Human Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60196] - 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-Vitamin-B12-ELISA-Kit-Colorimetric-ELISA-NBP2-60196-img0001.jpg "ELISA: Human Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60196] - These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.")
![Human Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60196] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp2-60196_human-vitamin-b12-elisa-kit-colorimetric-3120248485425.png)
![Rat Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60198] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp2-60198_rat-vitamin-b12-elisa-kit-colorimetric-3120248343411.png "Rat Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60198] - Standard Curve Reference")
![Mouse Vitamin B12 ELISA Kit (Colorimetric) [NBP2-59958] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp2-59958_mouse-vitamin-b12-elisa-kit-colorimetric-3120248504632.png "Mouse Vitamin B12 ELISA Kit (Colorimetric) [NBP2-59958] - Standard Curve Reference")
![Bovine Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60195] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp2-60195_bovine-vitamin-b12-elisa-kit-colorimetric-3120248485448.png "Bovine Vitamin B12 ELISA Kit (Colorimetric) [NBP2-60195] - Standard Curve Reference")