title: Letter: Vertical transmission of hepatitis-B surface antigen.
mesh_terms: D000914:Antibodies, Viral / Q000302:isolation & purification; D002353:Carrier State; D005260:Female; D006509:Hepatitis B / Q000635:transmission*; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D011247:Pregnancy
chemical_list: D000914:Antibodies, Viral; D006511:Hepatitis B Antigens