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The SI for CD4+ and CD8+ cells in HDs (n = 5). The pretreatment with IL-15 had a direct effect on the Treg cells, reducing their suppressive function, similar to IL-7. Median and IQR. A comparison of related groups was performed using the Friedman test (ANOVA), and post hoc analysis was performed using the Dunn test. HDs, healthy donors; SI, suppression index.
