title: The role of viral infection in the involvement of the haemopoietic system in chronic active hepatitis.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis*; D001853:Bone Marrow / Q000276:immunology*; D002908:Chronic Disease; D006505:Hepatitis / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006507:Hepatovirus / Q000276:immunology*; D006801:Humans
chemical_list: D000956:Antigens, Viral; D006514:Hepatitis B Surface Antigens