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Chromosomal assignment of the HL-A common antigenic determinants in man-mouse somatic cell hybrids.


In the study presented here, man-mouse somatic cell hybrid clones were examined by means of radioimmunoassays for the presence of both beta2-microglobulin (beta2m) and the HL-A xenoantigenic determinant. In addition, the clones were examined for their karyotype and the expression of enzymes with known chromosomal assignments. The results obtained indicate that the gene coding for the HL-A xenoantigenic determinant is carred on chromosome 6. The data obtained provides a direct demonstration that the gene coding for beta2m segregates independently of that coding for the alloantigenic polypeptide chain of the HL-A molecule, and that the gene coding for beta2m is carried on chromosome 15.

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