title: Amniocentesis: a new approach to some old problems in obstetrics.
mesh_terms: D000032:Abortion, Therapeutic; D000650:Amnion; D000653:Amniotic Fluid / Q000032:analysis; D005314:Embryonic and Fetal Development; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D030342:Genetic Diseases, Inborn / Q000175:diagnosis; D006801:Humans; D008722:Methods; D010920:Placenta / Q000033:anatomy & histology; D011247:Pregnancy; D011677:Punctures; D012204:Rh-Hr Blood-Group System; D014328:Trophoblastic Neoplasms / Q000175:diagnosis
chemical_list: D012204:Rh-Hr Blood-Group System