CD4 and sarcoidosis: Our results showed that PBMCs of patients with sarcoidosis (n = 23) exhibit higher expression for activated CD4+CD25+T cells (mean ± SEM, 11.08 ± 5.32% as compared to healthy (n = 7) controls (mean ± SEM, 5.16 ± 2.71%, p < 0.05).