Nucleic acid and proteins isolated from the Rauscher mouse leukemia virus (MLV).

Abstract
Raus cher mouse leukemia virus has been purified from plasma and tissue culture medium. The identity of the virus obtained from the 2 sources is demonstrated. Intact nucleic acid isolated using SDS (sodium dodecyl sulfate) and phenol extraction consists of single-stranded RNA (ribo-nucleic acid) with S20,w = 74 in 0.1 M salt. The purified virus was found to contain at least 2 major protein subunits.