T-lymphocytes in experimental myocardial infarction.

The WBC count, percentage of PMN's, lymphocyte counts and percentage of T-cells in blood, right duct and thoracic duct lymph of three- and nine-day post-coronary ligation and corresponding sham dogs were studied. It was observed that the percentage of T-cells in the right duct lymph of the nine-day post-coronary ligation group was significantly increased compared to the sham group, suggesting a possible cellular immune response late in the infarction process.