title: Hepatitis B virus.
mesh_terms: D000818:Animals; D006509:Hepatitis B / Q000235:genetics / Q000503:physiopathology / Q000628:therapy; D006515:Hepatitis B virus / Q000235:genetics / Q000502:physiology; D006801:Humans; D008113:Liver Neoplasms / Q000235:genetics / Q000821:virology*