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Crossreactive mixed lymphocyte reaction determinants recognized by cloned alloreactive T cells

Crossreactive mixed lymphocyte reaction determinants recognized by cloned alloreactive T cells

Proceedings of the National Academy of Sciences of the United States of America 76(11): 5863-5866

We have isolated clones of alloreactive T cells by soft agar cloning of primed responder cells contained in serially restimulated, mixed lymphocyte cultures. These clones recognize unique mixed lymphocyte reaction (MLR) stimulating determinants present on (C57B/6 X A/J)F1 (B6A) spleen cells. By assaying the reactivity patterns of these clones on a panel of stimulator cells, we have identified at least three separate "specificities" of alloreactive T cell clones. Several clones exhibiting one of these three reactivity patterns have been isolated on many occasions from different experiments. Using such clones of alloreactive T cells, we have identified and are attempting to define crossreactive MLR stimulating determinants exhibited by a panel of stimulator cells. Recognition by certain clones of a shared MLR determinant(s) on B6A and DBA/2 and of the lack of this determinant(s) on B6 stimulator cells questions current concepts concerning the nature of MLR stimulating determinants and T cell recognition of alloantigens.

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Accession: 038926546

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PMID: 93286

DOI: 10.2307/70560

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