Alimentary fibropapilloma in cattle: A spontaneous tumour, non-permissive for papillomavirus replication

W.F.H. Jarrett, M.S. Campo, M.L. Blaxter, B.W. O'Neil, H.M. Laird, M.H. Moar, M.L. Sartirana

Research output: Contribution to journalArticlepeer-review


ibropapillomatosis of the upper alimentary canal of cattle is described. The tumors, found in the esophagus, esophageal groove, and rumen, showed involvement of the subepithelial fibroblasts as well as of the squamous epithelial layer. Although the fibropapilloma cells harbored multiple episomal copies of the genome of bovine papillomavirus type 2 (BPV-2) easily detected by hybridization techniques, no mature virus could be isolated from these lesions or seen by electron microscopy, and no viral antigen could be detected by immunohistochemical methods. It would appear, therefore, that within the limitations of the techniques employed the alimentary canal epithelium and the underlying fibroblasts, while allowing BPV-2 DNA replication, are nonpermissive for the expression of the viral vegetative functions and that transformation of the epithelial cells, like transformation of fibroblasts, can take place in the absence of infectious viral progeny.
Original languageEnglish
Pages (from-to)499-504
Number of pages6
JournalJNCI: Journal of the National Cancer Institute
Issue number2
Publication statusPublished - 1984


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