Durham, B H. 1976. “Spectrophotometric End-Point Method for Assay of Serum Cystyl-Aminopeptidase in Pregnancy.”. Clinical Chemistry 22 (1): 79-82.
Abstract
An optimized end-point method that requires little sophisticated equipment is described for estimating serum cystyl-aminopeptidase during pregnancy. S-Benzyl-L-cysteine-4-nitroanilide is used as the substrate.