title: Letter: Maternal alpha-fetoprotein and fetal exomphalos.
mesh_terms: D000015:Abnormalities, Multiple / Q000097:blood; D000328:Adult; D005260:Female; D005315:Fetal Diseases / Q000097:blood*; D005326:Fetal Proteins / Q000032:analysis*; D006554:Hernia, Umbilical / Q000097:blood*; D006801:Humans; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D005326:Fetal Proteins; D000509:alpha-Fetoproteins