Spermatozoa and spermatophores.
D000818:Animals; D006801:Humans; D008297:Male; D008322:Mammals; D049831:Octopodiformes; D013075:Sperm Capacitation; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology / Q000201:enzymology / Q000378:metabolism / Q000502:physiology