Released LDH in culture supernatants is measured with a 30-minute coupled enzymatic assay, which results in the conversion of a tetrazolium salt (INT) into a red formazan product.

释放出的乳酸脱氢酶存在于培养上清中,可用酶联检法30量。这种酶联析导致唑盐（INT）转成红色甲臜。颜色形成的量与裂解细胞的数目成正比。

Superoxide dismutase(SOD) in eggs can inhibit the photoreduction of nitro-blue tetrazolium (NBT).Thisreaction can be used to quantitatively determine the enzyme activities of SOD.

鸡蛋中的超氧歧酶（SOD）可以抑制氮蓝唑（NBT）的光还原，可以根据SOD对NBT光还原的抑制作为酶活性的定量定。