ejaculated porcine and human spermatozoa , hamster spermatozoa from the cauda epididymidis , isolated hamster sperm heads and hamster cytoplasmic droplets contained activity that hydrolyzed the metalloendoprotease substrate abz-ala-gly-leu-ala-nba ( aaglan ) .
C0037868
spermatozoa
C0037844
sperm heads