title: Propagation of a B-tropic murine leukemia virus in N-type cells in the presence of different murine sarcoma viruses.
abstract: B-tropic MuLV, WN1802B, was converted to NB-tropic after 5 days of propagation in its nonpermissive N-type MLg or C3H2K cells in the presence of the S + L - MuSV, but not in the presence of the Harvey or Kirsten strains of MsSV.
mesh_terms: D002460:Cell Line; D017988:Gammaretrovirus; D009052:Leukemia Virus, Murine / Q000254:growth & development*; D009053:Sarcoma Viruses, Murine; D010948:Viral Plaque Assay