title: [Serological studies of twins of identical sex].
mesh_terms: D000293:Adolescent; D001789:Blood Group Antigens; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
chemical_list: D001789:Blood Group Antigens
vernacular_title: Badania serologiczne bliźniat jednopłciowych.