Echographic imagery of amniotic membranes in twin pregnancies.
D000650:Amnion; D004452:Echocardiography; D005260:Female; D005333:Fetus / Q000502:physiology; D006128:Growth; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic; D014463:Ultrasonography