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Figure 2 Distribution of cell immunophenotypes in group 1 (acute myocardial infarction [MI]), group 2 (old MI), and group 3 (no clinical history of ischemic heart disease). One-way analysis of variance showed significant differences (p = 0.0001) in the distribution of the various cytotypes and human leukocyte antigen (HLA)-DR–positive cells among the experimental groups. The Bonferroni test showed the following significant differences (p < 0.01) for actin (smooth muscle actin [SMA]) (group 1 vs. 2 and 3; group 2 vs. 3), CD3 (group 1 vs. 2 and 3; group 2 vs. 3), CD68 (group 1 vs. 2; group 2 vs. 3), and HLA-DR (group 1 vs. 2 and 3; group 2 vs. 3). Data are presented as the mean value with 95% confidence interval.