title: Letter: Racial variation in maternal serum-alpha-fetoprotein.
mesh_terms: D044466:Asian People; D005260:Female; D005326:Fetal Proteins / Q000032:analysis*; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D044465:White People; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D005326:Fetal Proteins; D000509:alpha-Fetoproteins