Fine structure of spermatogenesis and Sertoli cells (Epitheliocytus sustentans) in the bull.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D008297:Male; D008854:Microscopy, Electron; D012708:Sertoli Cells / Q000502:physiology / Q000648:ultrastructure*; D013091:Spermatogenesis; D013094:Spermatozoa / Q000648:ultrastructure*