Peritoneal exudate T lymphocytes from mice experimentally infected with the intracellular bacterium Listeria monocytogenes secreted high interleukin 2 activities after interaction with syngeneic normal macrophage presenting listerial antigen in vitro. L. monocytogenes-immune cells secreting IL 2 were radioresistant and bore the phenotype Thy 1(+) Lyt 1(+)23(-).
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Kaufmann et al. (1982) studied this question.
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