title: [Modern tends in the alteration of human spermatogenic activity].
authors.forename: V L
authors.initials: VL
authors.lastname: Bykov
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008297:Male; D008875:Middle Aged; D013076:Sperm Count; D013081:Sperm Motility; D013091:Spermatogenesis / Q000187:drug effects / Q000502:physiology* / Q000528:radiation effects; D013094:Spermatozoa / Q000002:abnormalities / Q000166:cytology