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Cell-mediated immune response after vasectomy in rats

Summary. This study investigated the development of a cell-mediated immune response after vasectomy in Swiss Albino rats, by comparing the development of the thymus-dependent lymphoid tissue of the regional testicular lymph node and the spleen in vasectomized and in sham-operated control animals. Frozen sections were used and thymus-dependent regions were stained by immunocytochemistry. After vasectomy, the areas occupied by the paracortex in the lymph node sections showed a significant increase in size; the thymus-dependent regions of the spleen, in contrast, showed no change. The regional lymph node, rather than the spleen, seems to be important in cell-mediated and humoral immune responses to vasectomy.

Keywords: lymph node; spleen; cell-mediated immunity, T-areas; rat