Viruses as related to cancer.
D000406:AKR murine leukemia virus; D000818:Animals; D002415:Cats; D002417:Cattle; D006801:Humans; D066298:In Vitro Techniques; D009052:Leukemia Virus, Murine; D051379:Mice; D008854:Microscopy, Electron; D009174:Mycoplasma; D009858:Oncogenic Viruses; D012190:Retroviridae