title: Australia antigen, coronavirus, and reverse transcriptase in viral hepatitis.
mesh_terms: D000208:Acute Disease; D002908:Chronic Disease; D006506:Hepatitis A / Q000201:enzymology* / Q000276:immunology / Q000382:microbiology; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus / Q000276:immunology; D008854:Microscopy, Electron; D012316:RNA Nucleotidyltransferases / Q000378:metabolism*; D014780:Viruses / Q000302:isolation & purification*
chemical_list: D006511:Hepatitis B Antigens; D012316:RNA Nucleotidyltransferases