title: Letter: Amniotic-fluid proteins.
mesh_terms: D000028:Abortion, Induced; D000418:Albumins / Q000032:analysis; D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D011247:Pregnancy; D011506:Proteins / Q000032:analysis*; D014168:Transferrin / Q000032:analysis; D014361:Trypsin Inhibitors
chemical_list: D000418:Albumins; D007136:Immunoglobulins; D011506:Proteins; D014168:Transferrin; D014361:Trypsin Inhibitors