Figure 6.

Dynamics of peripheral blood T cells at baseline and during treatment. Pairs of EDTA‐anticoagulant peripheral blood specimens were collected at baseline and during treatment after 40 Gy radiotherapy. Flow cytometry was used to identify T‐cell subsets and PD‐1/PD‐L1 expression. Paired t test was used to evaluate the differences in T‐cell subpopulations between at baseline and during treatment timepoint. p < .05, significant difference. Abbreviations: Lym, lymphocyte; PBMC, peripheral blood mononuclear cell; PD‐1, programmed cell death protein 1; PD‐L1, programmed cell death ligand 1; Treg, regulatory T cell.