Abstract
C-type viruses were formed in heterotransplants of 5/14 human urogenital tumours which had been serially transferred in nude mice of NIH(S) background. Except for one case in which C-type particles were present in the epithelial cells as well as the connective tissue, the viruses were only found within the stroma of the heterotransplanted tumours. Peroxidase labelling with anti-mouse serum demonstrated that the connective tissue supporting the transplanted human tumours was of mouse origin. Competition radioimmunoassays demonstrated that MuLV interspecies viral protein was present in high titre in the transplanted tumour extracts and also in extracts of 2 spontaneous mouse-tumour extracts. These data suggest that endogenous viruses of the nude mice are activated by the graft, and only subsequently infect the human tumour cells and form particles.
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Wunderli, H., Mickey, D. & Paulson, D. C-type virus particles in human urogenital tumours after heterotransplantation into nude mice. Br J Cancer 39, 35–42 (1979). https://doi.org/10.1038/bjc.1979.5
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DOI: https://doi.org/10.1038/bjc.1979.5
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