title: [Ultrastructure and development of apyrene and oligopyrene spermatozoa].
mesh_terms: D000818:Animals; D012831:Bombyx / Q000166:cytology; D002467:Cell Nucleus / Q000032:analysis; D006651:Histocytochemistry; D007248:Infertility, Male / Q000209:etiology; D008297:Male; D008854:Microscopy, Electron; D008974:Mollusca / Q000166:cytology; D009940:Organoids / Q000032:analysis; D012728:Sex Chromatin / Q000032:analysis*; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology*
vernacular_title: Ul'trastruktura i  razvitie apirennykh i oligopirennykh spermatozoidov.