Noun
Rous sarcoma virus (uncountable)
A retrovirus that causes sarcoma in chickens.
Michael Bishop and Harold Varmus showed that the oncogene of Rous sarcoma virus is in fact not specific to the virus but is contained in the genome of healthy animals of many species. Source: Internet
Protein tyrosine kinases that are encoded by the Rous sarcoma virus cause cellular transformation, and are termed oncoproteins. Source: Internet