Abstract
Murine beta 2-microglobulin exists in 2 electrophoretically distinct forms; C57BL/6 mice possess the basic allele whereas BALB/c, CBA, AKR, and NZB possess the acidic allele. Mice heterozygous for beta 2-microglobulin express both alleles. Analysis of recombinant inbred mice suggests linkage of beta 2-microglobulin to H-2 or H-3. B10.C (28NX) mice (which possess the H-3c allele of BALB/c on a C57BL/10 background) possess the acid allele. Taken together, these results are consistent with the beta 2-microglobulin gene lying on chromosome 2, and being linked to H-3 and Ly-4.

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