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  • Title: Effect of Nu/Nu gene on genetically determined resistance to murine cytomegalovirus.
    Author: Grundy JE, Melief CJ.
    Journal: J Gen Virol; 1982 Jul; 61 (Pt l)():133-6. PubMed ID: 6288849.
    Abstract:
    Adult athymic Nu/Nu mice showed increased susceptibility to lethal infection with murine cytomegalovirus (MCMV) when compared to their heterozygous T cell-competent Nu/+ littermates. However, the extent of this increase in susceptibility varied dramatically depending on the genetic background of the mice carrying the Nu/Nu gene. Genetically susceptible Balb/c (H-2d) mice showed a greater than 316-fold difference between the LD50 of Nu/Nu and Nu/+ littermates. In marked contrast, the genetically resistant CBA (H-2K) strain was characterized by only a 16-fold difference in resistance between Nu/Nu and Nu/+ mice, and furthermore, the athymic CBA Nu/Nu mice were no susceptible than the T cell-competent Balb/c Nu/+ strain. These results together with previous observations strongly suggest that the (H-2k)-associated resistance of the CBA strain is mediated by non-T cell-dependent early defence mechanisms.
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