Virus←→3040% Human cancers EBV assoc, with Burkitts HTLV-1 and link Lymphoma Discovered to human T-Cell 1st Human Leukemia discovered Tumor Virus (1981) (1965) KSHV and link to Ks ALV HA∨ (1908) (1953-54) Merkel cell Link bet. HBV& Discovered MMTV Hepatocellular (1994) Polyoma Virus link to Merkel Cell Cancer RSV (1936) Carcinoma MPV 2008 (1911) (1953) (1975) Link bet. hcv CRPV SV40 Link bet. HPV& Hepatocellular FDA approves use HPV (1960) Cervical Cancer Carcinoma of HPv vaccine (1907) (1933) MLV (1951) (1974-1984) (1989) for cervical cancer (2006) 19101920193019401950196019701980199020002010 Timeline of Advances on Tumor Virology Javier.R.T et al. Cancer res 2008Javier, R. T. et al. Cancer Res 2008 Virus  30-40% Human Cancers Timeline of Advances on Tumor Virology