title: [The study of transmission of HBV in utero].
mesh_terms: D004279:DNA, Viral / Q000032:analysis; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious
chemical_list: D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens