| detection of hepatitis b virus antigens in paraffin-embedded liver specimens from the amazon region, brazil. | hepatic viscerotomy of paraffin-preserved old specimens, collected in the period from 1934 to 1967, were analyzed by immunohistochemical assays to detect hepatitis b, hepatitis d, dengue and yellow fever virus antigens. the material belongs to the yellow fever collection, department of pathology, instituto oswaldo cruz, rio de janeiro, brazil and the cases were diagnosed at that time according to clinical aspects and histopathological findings reporting viral hepatitis, yellow fever, focal necro ... | 2002 | 11992158 |