Comparison of amniotic-fluid and maternal serum alpha-fetoprotein levels in the early antenatal diagnosis of spina bifida and anencephaly.

Abortion, Therapeutic Alpha-Globulins/analysis,metabolism Amniotic Fluid/analysis Anencephaly/blood,diagnosis Blood Specimen Collection Female Fetal Proteins/analysis,metabolism Fetus/metabolism Gestational Age Humans Maternal-Fetal Exchange Pregnancy Pregnancy, Multiple Prenatal Diagnosis Radioimmunoassay Twins

Alpha-Globulins Fetal Proteins