[The detection of the chicken sarcoma virus D6 in a tumor induced by 7,12-dimethylbenz(a)anthracene]

A tumor induced by 7.12-dimethylbenz (a) anthracene in the hen is described from which a virus was isolated and classified as C type of Rous sarcoma virus. The virus is described in brief. It does not belong to any known strain of Rous sarcoma virus.