title: New class of animal virus found in virulent form of human hepatitis.
mesh_terms: D003699:Hepatitis D / Q000235:genetics / Q000382:microbiology*; D003698:Hepatitis Delta Virus / Q000235:genetics* / Q000472:pathogenicity; D006801:Humans; D012367:RNA, Viral / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D014772:Viroids / Q000235:genetics / Q000648:ultrastructure
chemical_list: D012367:RNA, Viral