The determination of zygosity--a study of 608 pairs of twins born in Aberdeen.
D000293:Adolescent; D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D036861:Delivery, Obstetric; D003878:Dermatoglyphics; D005260:Female; D005306:Fertilization; D006801:Humans; D007223:Infant; D008297:Male; D009026:Mortality; D010063:Ovum; D010808:Physical Examination; D010920:Placenta / Q000033:anatomy & histology; D011247:Pregnancy; D012737:Sex Factors; D014427:Twins
D001789:Blood Group Antigens