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The Journal of Immunology, Vol 138, Issue 1 26-31, Copyright © 1987 by American Association of Immunologists

ARTICLES

Retention of T cell reactivity to mitogens and alloantigens by Peyer's patch cells of aged mice

DN Ernst, WO Weigle and ML Thoman

Immune function generally declines with advancing age. However, recent evidence suggests that this decline may differentially affect the lymphoid compartments comprising the immune system. The effect of age on the T cell-mediated competency of cells from two different lymphoid compartments, Peyer's patch (PP) and spleen, was studied. PP cells of aged C57BL/6 mice retained a greater capacity to proliferate in response to concanavalin A, phytohemagglutinin, and alloantigen and to generate alloimmune cytotoxic cells than did splenocytes of aged mice when compared with their young counterparts. These results could not be explained by significant shifts in the response kinetics or in the proportions of T cells in individual tissues. These results support the concept that lymphoid compartments are not equally sensitive to the deleterious effects of the aging process.




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