Sex vesicle in spermatogenesis in bull.
D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000648:ultrastructure; D008297:Male; D008540:Meiosis; D012730:Sex Chromosomes / Q000648:ultrastructure*; D013090:Spermatocytes / Q000166:cytology*; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology*