title: Sperm lytic activity and its relation to fertilization in the frog Rana pipiens.
mesh_terms: D000818:Animals; D001001:Anura / Q000196:embryology; D005260:Female; D005306:Fertilization / Q000187:drug effects; D007315:Insemination, Artificial; D008297:Male; D010060:Ovulation; D010063:Ovum; D013094:Spermatozoa; D014361:Trypsin Inhibitors / Q000494:pharmacology
chemical_list: D014361:Trypsin Inhibitors