title: Vitamin B12-binding proteins in human amniotic fluid: an index to fetal maturity.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D002352:Carrier Proteins / Q000032:analysis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D002352:Carrier Proteins; D014805:Vitamin B 12