title: Sexual identity, monozygotic twins reared in discordant sex roles and a BBC follow-up.
mesh_terms: D000293:Adolescent; D002369:Castration; D005260:Female; D005783:Gender Identity; D006801:Humans; D007062:Identification, Psychological; D008297:Male; D010413:Penis / Q000293:injuries; D011247:Pregnancy; D012951:Socialization; D013690:Television; D014430:Twins, Monozygotic