title: Vertical transmission of the HBV-associated delta agent.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis; D003673:Defective Viruses / Q000276:immunology; D005260:Female; D006509:Hepatitis B / Q000635:transmission*; D006511:Hepatitis B Antigens / Q000032:analysis; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006518:Hepatitis Viruses / Q000276:immunology; D035923:Hepatitis delta Antigens; D006525:Hepatitis, Viral, Human / Q000151:congenital / Q000635:transmission*; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D011247:Pregnancy
chemical_list: D000914:Antibodies, Viral; D006511:Hepatitis B Antigens; D006514:Hepatitis B Surface Antigens; D035923:Hepatitis delta Antigens