Sex differences in the central nervous system.
D000818:Animals; D001717:Birds; D002490:Central Nervous System / Q000033:anatomy & histology / Q000166:cytology / Q000502:physiology*; D006801:Humans; D008297:Male; D010063:Ovum / Q000502:physiology; D010413:Penis / Q000033:anatomy & histology; D012727:Sex Characteristics