title: [Teratospermia consisting of the absence of the head of the spermatozoa because of a fault in the joint between the head and the neck of the sperm in man (author's transl)].
abstract: An ultrastructural sperm study was conducted in a sterile man whose sperm count showed 100 percent headless spermatozoa. Testicular biopsy showed abnormal spermatogenesis : within the spermatid, the sperm head developed separately from the flagellum, which alone was ejected during spermiation.
mesh_terms: D000328:Adult; D005407:Flagella / Q000648:ultrastructure; D006801:Humans; D007248:Infertility, Male / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000473:pathology* / Q000648:ultrastructure
vernacular_title: Tératospermie consistant en l'absence de tête spermatique par défaut de connexion tête-col, chez l'homme.