title: Ultrastructural aspects of asthenospermia.
abstract: In fifty cases of proven asthenospermia semen samples were examined for ultrastructural abnormalities. In 32 of the cases the sperm cells appeared either completely normal, or presented only minor abnormalities. In 15 cases severe teratospermia was observed. In the 3 remaining cases, specific and hitherto undescribed tail abnormalities were detected.
mesh_terms: D006801:Humans; D007248:Infertility, Male / Q000209:etiology; D008297:Male; D013081:Sperm Motility; D013082:Sperm Tail; D013091:Spermatogenesis; D013094:Spermatozoa / Q000002:abnormalities / Q000648:ultrastructure*