Abstract
Evidence is presented which indicates that recirculating lymphocytes originating from the intestine in pigs are returned to the blood circulation at the level of the mesenteric lymph nodes (MLN) and not via efferent intestinal lymph. This was demonstrated by three observations: (1) removal of all MLN resulted in a thirty-fold increase in lymphocyte numbers in efferent lymph of pigs, but not in rats; (2) there are about twenty-five times more lymphocytes in afferent intestinal lymph than efferent intestinal lymph in normal pigs; (3) 51Cr-labelled lymphocytes injected into afferent lymphatics are mostly recovered in the node tissue or efferent lymph of sheep, and very few in the venous drainage, whereas in pigs relatively few labelled cells are recovered in the node or in efferent lymph.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
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