title: Studies on boar semen. I. A new major defect in the sperm head, the "SME"-defect.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D002479:Inclusion Bodies; D007248:Infertility, Male / Q000662:veterinary*; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000002:abnormalities* / Q000166:cytology; D013552:Swine; D013553:Swine Diseases