title: Ultrastructure of subcellular fractions of bull spermatozoa after hyamine treatment.
mesh_terms: D000818:Animals; D002417:Cattle; D002458:Cell Fractionation; D002462:Cell Membrane; D002467:Cell Nucleus; D002499:Centrifugation, Density Gradient; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000166:cytology* / Q000187:drug effects; D013347:Subcellular Fractions; D013501:Surface-Active Agents / Q000494:pharmacology*
chemical_list: D013501:Surface-Active Agents