title: Viruses and human neoplasia. Approaching etiology.
mesh_terms: D000818:Animals; D006801:Humans; D009369:Neoplasms / Q000209:etiology*; D009857:Oncogenes; D009858:Oncogenic Viruses; D012514:Sarcoma, Kaposi / Q000209:etiology; D014412:Tumor Virus Infections