| a unique sequence related to the ecotropic murine leukemia virus is associated with the fv-4 resistance gene. | several strains of laboratory and wild-derived mice from japan carry the dominant allele at the fv-4 locus (fv-4r) that is responsible for resistance to infection by exogenous ecotropic murine leukemia virus. we have used blot hybridization with a probe specific for the ecotropic viral envelope to show that a unique envelope-reactive sequence is present in the japanese mouse mus musculus molossinus and in four independently derived partially congeneic strains carrying fv-4r. analysis of 31 backc ... | 1984 | 6322171 |