1887

Abstract

Summary

A herpesvirus isolated from several organs of an American bison affected with malignant catarrhal fever was cultured in bovine foetal spleen cells and studied by electron microscopy. The fine structural features of the mature virion and the mode of virus morphogenesis were found to be similar to herpesviruses classified in the subgroup cytomegalovirus. The capsids were granular, hexagonal in shape and contained pleomorphic cores in thin sections. Envelopment of the capsids occurred primarily by budding on cytoplasmic membranes which appeared to be formed as extended vesicles of the Golgi apparatus; budding on nuclear membranes was only rarely observed. Cytoplasmic inclusions consisting of granular threads and amorphous electron-dense material were found in association with virions during the late stages of infection. The formation of cytoplasmic inclusions, the morphogenesis and ultrastructure of the virus are all consistent with classification of this virus as a cytomegalovirus.

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/content/journal/jgv/10.1099/0022-1317-64-5-1025
1983-05-01
2019-11-18
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http://instance.metastore.ingenta.com/content/journal/jgv/10.1099/0022-1317-64-5-1025
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