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American Journal of Pathology, Vol 84, 259-282, Copyright © 1976 by American Society for Investigative Pathology

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The repopulation of lymph nodes of dogs after 1200 R whole-body x- irradiation and intravenous administration of mononuclear blood leukocytes

B Nelson, W Calvo, TM Fliedner, E Herbst, C Bruch, HP Schnappauf and HD Flad

Fresh and cryopreserved autologous or allogeneic mononuclear blood cells (MBCs) intravenously injected in 1200 R total-body x-irradiated dogs repopulated lymph nodes within 10 days after tranfusion. Several parameters of the lymphopoietic regeneration were correlated with the number of cells transfused and with the number of colony-forming units contained in the cell suspension when they were cultured in agar (CFUc). Values within the normal or close to normal range were reached in the mesenteric nodes of most of the animals transfused with 10 X 10(9) MBC or more. These values were obtained when 5 X 10(5) CFUc or more were transfused. Axillary nodes showed lower values than mesenteric nodes. They were mostly under the normal range but well over those of the irradiated controls. Frozen and thawed MBCs seem to be as effective as fresh cells for lymphopoietic restoration. The mesenteric nodes of dogs transfused with allogeneic MBCs showed higher cellularity and larger cortical-paracortical areas than those of dogs tranfused with approximately the same number of autologous cells. The repopulation of lymph nodes parallels that of the marrow.




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Copyright © 1976 by the American Society for Investigative Pathology.