The Journal of Experimental Medicine
Janeway's Immunobiology 7th Edition
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Published online 27 June 2005 doi:10.1084/jem.20050137
Rockefeller University Press, 0022-1007 $8.00
JEM, Volume 202, Number 1, 123-133
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ARTICLE

Differential contributions of central and effector memory T cells to recall responses

Alan D. Roberts, Kenneth H. Ely, and David L. Woodland

Trudeau Institute, Saranac Lake, NY 12983

CORRESPONDENCE David L. Woodland: dwoodland{at}trudeauinstitute.org

Although the absolute number of memory CD8+ T cells established in the spleen following antigen encounter remains stable for many years, the relative capacity of these cells to mediate recall responses is not known. Here we used a dual adoptive transfer approach to demonstrate a progressive increase in the quality of memory T cell pools in terms of their ability to proliferate and accumulate at effector sites in response to secondary pathogen challenge. This temporal increase in efficacy occurred in CD62Llo (effector memory) and CD62Lhi (central memory) subpopulations, but was most prominent in the CD62Lhi subpopulation. These data indicate that the contribution of effector memory and central memory T cells to the recall response changes substantially over time.


Abbreviations used: MLN, mediastinal lymph node; NP, nucleoprotein; PCL, pleural cavity lavage.


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