Abstract
It is now thought that most human and animal tumors are caused by environmental factors such as chemical pollutants. However, a small number of animal tumors are known to be caused by viruses. The most common oncogenic viruses are the RNA-containing oncoviruses which are usually contagious and cause lymphoid tumors or sarcomas in young animals. Most of the tumors caused by oncoviruses in animals are viral producers, that is, the causative oncovirus is expressed and can be readily detected in the tumor tissue (Hardy 1978). However, some of the lymphosarcomas (LSA) of pet cats that are caused by the feline leukemia virus (FeLV) exhibit no evidence of FeLV infection even though, as will be clear from the data presented below, FeLV appears to be the etiologic agent for these viral nonproducer (NP) LSAs (Francis et al. 1979; Hardy et al. 1980).
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© 1981 Springer-Verlag Berlin Heidelberg
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Hardy, W.D. et al. (1981). Feline Leukemia Virus Nonproducer Lymphosarcomas of Cats as a Model for the Etiology of Human Leukemias. In: Neth, R., Gallo, R.C., Graf, T., Mannweiler, K., Winkler, K. (eds) Modern Trends in Human Leukemia IV. Haematology and Blood Transfusion / Hämatologie und Bluttransfusion, vol 26. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67984-1_90
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DOI: https://doi.org/10.1007/978-3-642-67984-1_90
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