title: Boar spermatozoa with multiple heads.
mesh_terms: D000818:Animals; D005334:Fever / Q000150:complications / Q000662:veterinary; D007248:Infertility, Male / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D008297:Male; D013094:Spermatozoa; D013552:Swine; D013553:Swine Diseases / Q000473:pathology*