title: Structure of the sex vesicle in bull.
mesh_terms: D000818:Animals; D002417:Cattle; D002843:Chromatin / Q000648:ultrastructure*; D008297:Male; D009685:Nuclear Envelope / Q000648:ultrastructure; D012730:Sex Chromosomes / Q000648:ultrastructure*; D013090:Spermatocytes / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*
chemical_list: D002843:Chromatin