title: Spectrophotometric analysis of amniotic fluid in early gestation.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D004899:Erythroblastosis, Fetal / Q000175:diagnosis; D005260:Female; D005865:Gestational Age; D006801:Humans; D010860:Pigments, Biological / Q000032:analysis; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System; D013053:Spectrophotometry
chemical_list: D010860:Pigments, Biological; D012204:Rh-Hr Blood-Group System