after removal of the thymidine block , which allows the cells to go then through their cell cycle phases , n-acylamino acylpeptide hydrolase ( ec 3.4.19.1 ) activity was measured using n-acetylalanine-p-nitroanilide as substrate ( n-acetylalanine aminopeptidase ) .
C0007634
cells
C1516337
cell cycle phases