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Department of Pathology, New York Medical College, Valhalla, New York 10595
Abstract
Tritium-labeled anti-chicken red blood cells (CRBC) and 14C-labeled anti-sheep red blood cells (SRBC) lymphocytes were adoptively transferred to three groups of syngeneic mice, previously challenged i.v. with CRBC, SRBC, or Brucella abortus (BA). Subgroups of each group were sacrificed at 24, 48, and 72 hr after challenge and the relative numbers of anti-CRBC to anti-SRBC lymphocytes present in the spleen, peripheral lymph nodes, and peripheral blood for each group of mice were inferred from the mean 3H/14C ratios of these tissues. The results of these studies clearly established that challenged spleens can selectively trap recirculating immunospecific lymphocytes. Selective trapping was maximum at 48 hr after challenge, but still persisted at a high level at 72 hr. An unexpected finding was the clear demonstration of a deficiency of immunospecific lymphocytes in the peripheral lymph nodes. This deficiency was maximum at 24 hr and then declined. The functional significance and implications of the selective trapping of immunospecific lymphocytes and the concomitant depletion of these cells in other tissues is discussed.
Footnotes
1 This study was supported by Grants AI-09106, GRS-5501-RR 05398 from the United States Public Health Service, National Institutes of Health, and ACS-IN-96 from the American Cancer Society.
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