title: Hepatitis B virus.
mesh_terms: D000818:Animals; D001803:Blood Transfusion; D002273:Carcinogens / Q000633:toxicity*; D004781:Environmental Exposure; D005260:Female; D033161:Government Regulation; D006509:Hepatitis B / Q000473:pathology / Q000635:transmission; D006515:Hepatitis B virus / Q000472:pathogenicity*; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D014481:United States
chemical_list: D002273:Carcinogens