ABSTRACT: A virus of typical Herpesvirus morphology was found in papillomas and carcinomas of smelt Osmerus mordax. Icosahedral unenveloped viral nucleocapsids 95 nm in diameter were found in the enlarged nuclei of infected cells. The nuclei contained dispersed granular chromatin that appeared to be producing viral nucleoids. Most cytoplasmic viral particles were enveloped in electron-dense material, and surrounded by a smooth-membraned vesicle. Some vesicles containing viruses were associated with the enlarged Golgi apparatus, the outer nuclear membrane, or the limiting membrane of the cell.

KEY WORDS: Herpesvirus . Papilloma . Carcinoma . Smelt . Osmerus mordax . Ultrastructure

Published in DAO Vol. 26, No. 1 (1996) on July 18
ISSN: 0177-5103. Copyright © Inter-Research, Oldendorf/Luhe, 1996