Abstract
B6.C-H-2ba [H (z1)] is a mutant derived from C57BL/6. The two strains mutually reject their skingrafts and are incompatible in the mixed leucocyte reaction (MLR) and in cell-mediated lympholysis (CML) assays. They are serologically indistinguishable.
This report shows that H(z1) carries a new, privateK end CML specificity clearly distinguishable from that of B6 by a third party strain, HTG. Antisera directed against the private H-2K specificity of B6 present on H(z1) cells) can block CML between the two strains in either direction. The new CML specificities of H(z1) cross-react with (public) CML specificities controlled by bothK andD regions of other unrelated haplotypes. The results suggest that H(z1) carries a mutation in theH-2K locus itself or in a closely linked gene, the product of which is also physically associated with the H-2K molecule corresponding to the cis-configuration of the alleles in both loci.
These findings indicate that T- and B-cell dictionaries for histocompatibility determinants are different.
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On leave of absence from the Instituto di Genetic Medica, Universita di Torino, Torino, Italy.
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Nabholz, M., Young, H., Meo, T. et al. Genetic analysis of anH-2 mutant, B6.C-H-2ba, using cell-mediated lympholysis: T- and B-cell dictionaries for histocompatibility determinants are different. Immunogenetics 1, 457–468 (1974). https://doi.org/10.1007/BF01564084
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DOI: https://doi.org/10.1007/BF01564084