title: Heterokaryotypic monozygotic twins and the acardiac monster.
mesh_terms: D009008:Abnormalities, Severe Teratoid; D001775:Blood Circulation; D001789:Blood Group Antigens; D005260:Female; D005306:Fertilization; D006330:Heart Defects, Congenital; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D010063:Ovum; D011247:Pregnancy; D014314:Trisomy; D014427:Twins
chemical_list: D001789:Blood Group Antigens