Isolation of the nucleic acid of mouse mammary tumor virus (MTV).

Abstract
A single-stranded 70 S20,w RNA was isolated from purified MTV [mammary tumor virus] derived from 2 different strains of mice. The MTV-RNA- is comparable in size and structure to the RNA of the oter known tumor viruses RSV [Rous sarcoma, virus] + RAV [Rous associated virus] and MLV [mouse leukemia virus].