title: Distribution of a trypsin-like proteinase in the ram spermatozoon.
mesh_terms: D000818:Animals; D002458:Cell Fractionation; D002498:Centrifugation; D010450:Endopeptidases / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D008247:Lysosomes / Q000201:enzymology; D008297:Male; D012756:Sheep; D013094:Spermatozoa / Q000201:enzymology*
chemical_list: D010450:Endopeptidases