title: Origin of maternal serum AFP.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis; D005260:Female; D005865:Gestational Age; D006801:Humans; D009436:Neural Tube Defects / Q000097:blood; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000032:analysis / Q000096:biosynthesis*
chemical_list: D000509:alpha-Fetoproteins