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  • Title: F1 hybrid-anti-parental H-2b cell-mediated lympholysis: genetic control of target antigens by the H-2D region.
    Author: Nakano K, Nakamura I, Cudkowicz G.
    Journal: J Immunol; 1981 Jul; 127(1):173-8. PubMed ID: 6165761.
    Abstract:
    The immunogenetic specificity of (C57BL/6 X DBA/2)F1 anti-parental C57BL/6 cytotoxic T lymphocytes (CTL) induced in primary mixed spleen cell cultures was determined in direct lytic and competitive inhibition assays. A large panel of peritoneal exudate cells (PEC) bearing nonrecombinant and recombinant H-2-Tla haplotypes was the source of target and inhibitor cells. All PEC of H-2b, H-2bc, H-2j, and H-2ja types, irrespective of background genetic constitution, were as susceptible to direct lysis as C57BL/6 PEC, but PEC of H-2a, H-2d, H-2k, H-2q, H-2s, and H-2u types were not. The possible involvement of the Tla region in controlling target antigens was excluded by testing PEC obtained from 4 H-2/Tla or intra-Tla recombinant mouse strains. The genes controlling target antigens were mapped to the D region with the aid of 9 intra-H-2 recombinants; for target PEC to be lysed it was necessary and sufficient that Db antigens be part of the H-2 phenotype. These results were confirmed by competitive inhibition assays. Resident peritoneal cells not exposed to fetal bovine serum were also lysed by F1 anti-parental H-2b CTL, a demonstration that target antigens are expressed on normal cells.
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