Original description of the chicken sarcoma (Rous sarcoma). More than 50 years later (1966) Rous shared the Nobel Prize with Charles Huggins for work on cancer. Rous demonstrated that sarcomatous tumors in hens could be transmitted to normal hens by the injection of cell-free filtrates (virus) of the original tumor. The Rous Sarcoma Virus was the first oncovirus discovered.