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International Journal of Experimental Pathology logoLink to International Journal of Experimental Pathology
. 1992 Aug;73(4):417–433.

Histopathology of lymphoid organs in experimental leishmaniasis.

C E Corbett 1, R A Paes 1, M D Laurenti 1, H F Andrade Júnior 1, M I Duarte 1
PMCID: PMC2002360  PMID: 1390190

Abstract

Hamsters (Mesocricetus auratus) were inoculated with L. (L.) chagasi and killed on days 7, 15, 30, 45 and 60 after infection. The lymphoid organs developed initial proliferation of the B lymphocyte zone with recovery by the 60th day group when pyroninophilic cells were prominent. The T lymphocyte area showed a progressive selective decrease of lymphocytes and cellular density with cellular pleomorphism including macrophages, plasma cells and reticular cells. The mean volume of the white pulp increased with the lymphoid follicle hyperplasia but returned to its initial level by day 60. The main red pulp change was marked hyperplasia of the phagocytic mononuclear cells containing parasites from the 30th day of infection onward. These changes are compatible with the humoral and cellular immunoresponse found in patients with visceral leishmaniasis (VL).

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