Endogenous glucose oxidase activity does not exist in mammalian tissues, so the VECTASTAIN® ABC-GO Kit can be used when endogenous peroxidases or alkaline phosphatases interfere with specific staining and when blocking of that endogenous enzyme activity is ineffective or would destroy antigenic determinants. The VECTASTAIN® ABC Glucose Oxidase Kit is the least sensitive of the VECTASTAIN® ABC systems.These kits are sufficient to stain approximately 1000 - 2000 sections or fifty 100 cm2 blots.