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. 1975 Feb;15(2):332–337. doi: 10.1128/jvi.15.2.332-337.1975

Genetic transmission of endogenous N- and B-tropic murine leukemia viruses in low-leukemic strain C57BL/6.

T Odaka
PMCID: PMC354457  PMID: 163359

Abstract

Spontaneous expression of endogenous N- and B-tropic murine leukemia viruses was stu1bb), DDD (Fuv-1nn), DDD-Fvr (fv-1nn), (DDD or DDD-Fvr times C57BL/6)F1, and 16 partially inbredlines with either the Fv-1nn or Fv-1bb genotype, which had been established from hybrids between C57BL/6 and DDD-Fvr. When tested at middle age, virus-positive mice were found in C57BL/6, F1 hybrids, and 9 out of 16 partially inbred lines. N-tropic viruses were isolated from Fv-1nn, Fv-1bb mice, whereas B-tropic viruses, except for one isolate, were from Fv-1bb mice only. C57BL/6 mice were positive for both N- and B-tropic viruses, whereas DDD-Fvr mice were negative. With respect to the Fv-1 genotype and the presence of endogenous murine leukemia viruses, the partially inbred lines were grouped into five types: (i) Fv-1bb, both N- and B-tropic virus positive, like C57BL/6; (ii) Fv-1nn, virus negative, like DDD-Fvr; (iii) Fv-1bb, virus negative; (iv) Fv-1nn, only N-tropic virus positive; and (v) less convincingly, Fv-1bb, only B-tropic virus positive. These findings indicate that the transmission of N- and B-tropic viruses in C57BL/6 is genetically controlled and that the expression of B-tropic virus, but not of N-tropic virus, is closely associated with the Fv-1 genotype.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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