Absence of alpha-1-fetoprotein antigen or antibody in maternal sera.
D000362:Agar; D000906:Antibodies / Q000032:analysis; D000937:Antigen-Antibody Reactions; D000941:Antigens; D005260:Female; D005326:Fetal Proteins; D005865:Gestational Age; D006801:Humans; D005779:Immunodiffusion; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D011247:Pregnancy
D000906:Antibodies; D000941:Antigens; D005326:Fetal Proteins; D000362:Agar