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  • Title: Mousepox in inbred mice innately resistant or susceptible to lethal infection with ectromelia virus. V. Genetics of resistance to the Moscow strain.
    Author: Brownstein D, Bhatt PN, Jacoby RO.
    Journal: Arch Virol; 1989; 107(1-2):35-41. PubMed ID: 2803004.
    Abstract:
    The genetics of resistance to the Moscow strain of ectromelia virus was examined in crosses derived from resistant C57BL/6 (B6) and susceptible DBA/2 (D2) mice. Infection with 10(1) to 10(5) PFU of virus resulted in mortalities of 90 to 100% of D2, 0% of B6 and 0 to 3% of (B6 x D2) F1 mice by day 21. Among F1 x D2 backcross progeny, 49% of male and 18% of female mice died. Reciprocal backcrossing did not alter male or female mortality rates. These data are consistent with a single autosomal dominant gene controlling resistance to ectromelia in male mice and at least one additional dominant sex-limited gene controlling resistance in female mice. Fewer male F2 mice died than were predicted based on single-locus control and 32% of recombinant inbred (RI) strains derived from B6 and D2 progenitors expressed non-parental phenotypes. Therefore, additional resistance genes, not expressed in backcross mice, were apparently expressed in F2 mice and RI strains.
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