title: Amniotic fluid beta-2 microglobulin concentration--an index of gestational age.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D001609:Beta-Globulins / Q000032:analysis* / Q000378:metabolism / Q000652:urine; D003404:Creatinine / Q000032:analysis; D004899:Erythroblastosis, Fetal / Q000378:metabolism; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000378:metabolism; D011250:Pregnancy Complications, Hematologic / Q000378:metabolism; D011296:Prenatal Diagnosis; D011506:Proteins / Q000032:analysis; D013997:Time Factors
chemical_list: D001609:Beta-Globulins; D011506:Proteins; D003404:Creatinine