CELLULAR MEDIATORS OF ANTI-LISTERIA IMMUNITY AS AN ENLARGED POPULATION OF SHORT-LIVED, REPLICATING T CELLS

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Abstract
An intravenous immunizing infection with the facultative, intracellular parasite, Listeria monocytogenes results in the production in the spleen of a population of immunologically-committed lymphocytes which can adoptively immunize normal recipients against a lethal challenge infection. These cellular mediators of immunity are first produced in the spleen between days 2 and 4 of infection and reach peak production on day 6. Their production then progressively decreases until about day 20 when their presence can no longer be detected.