The nature of the hepatitis B virus and its mode of replication.
D000956:Antigens, Viral; D005814:Genes, Viral; D006512:Hepatitis B Core Antigens; D006514:Hepatitis B Surface Antigens / Q000302:isolation & purification; D006515:Hepatitis B virus; D006801:Humans; D014176:Protein Biosynthesis; D014779:Virus Replication
D000956:Antigens, Viral; D006512:Hepatitis B Core Antigens; D006514:Hepatitis B Surface Antigens