The LEW.BN(2R) strain: a recombinant in the rat MHC.

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Abstract
Cell-mediated cytolytic (CMC) responses resulting from immunizations between rat strains considered to be RT1 (Ag-B) identical (LEW.B3:BN) are capable of detecting a membrane determinant(s) controlled by a locus linked to RT1, which has been designated Ag-L. The Ag-L gene region has been isolated in a recombinant line, tentatively designated as LEW.BN(2R), and has been assigned the RT1r5 haplotype. The data presented demonstrate that the genes responsible for MLR stimulation in the 2R strain are of LEW origin. In addition, LEW.B3 anti-BN CTL appear to recognize multiple specificities, only one of which is in the 2R strain. Some of the remaining specificities in BN may be the result of interactions between undetected genes that have been separated in the LEW.B3 and 2R strains.