Clinical Significance of Negative Costimulatory Molecule PD-1/PD-L1 on Peripheral Blood Regulatory T Cell Levels among Patients with Pulmonary Tuberculosis

Figure 3

Flow cytometry detecting PD-1 and PD-L1 expression on peripheral blood CD4⁺CD25⁺CD127^low Tregs among active pulmonary tuberculosis. (a) Representative flow cytometric plots for detection of PD-1 and PD-L1 expression on peripheral blood CD4⁺CD25⁺CD127^low Tregs. (b) Comparison of PD-1 expression on peripheral blood CD4⁺CD25⁺CD127^low Tregs between active pulmonary tuberculosis patients and healthy controls. (c) Comparison of PD-1 expression on peripheral blood CD4⁺CD25⁺CD127^low Tregs between active pulmonary tuberculosis patients and healthy controls.

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