A single locus, tentatively denoted Srlv-1 (susceptibility to radiation leukemia virus [RadLV]-1), confers dominant susceptibility to RadLV-induced leukemogenesis. Srlv-1 is not linked to H-2, and appears to be distinct from Fv-1 and Fv-2. Preliminary data suggest that Srlv-1 affected virus proliferation. A striking feature of this system is that Srlv-1 overrides the protection afforded by the H2D-associated dominant resistance to RadLV-induced neoplasia.

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