title: Delta infection in the course of chronic hepatitis B.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002908:Chronic Disease; D003673:Defective Viruses; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000150:complications* / Q000473:pathology; D006511:Hepatitis B Antigens / Q000032:analysis; D006518:Hepatitis Viruses; D035923:Hepatitis delta Antigens; D006525:Hepatitis, Viral, Human / Q000150:complications* / Q000473:pathology; D006801:Humans; D008099:Liver / Q000276:immunology / Q000473:pathology; D008875:Middle Aged
chemical_list: D006511:Hepatitis B Antigens; D035923:Hepatitis delta Antigens