The concept of viral etiology of cancer and allied diseases with particular reference to cancer of the colon.
D000818:Animals; D003110:Colonic Neoplasms / Q000209:etiology* / Q000235:genetics; D006801:Humans; D007938:Leukemia / Q000235:genetics; D051379:Mice; D051381:Rats; D012190:Retroviridae; D014412:Tumor Virus Infections / Q000635:transmission*