Fig2. Cell surface PD1 expression by CD4+CD25+CD127-/lowTregs in the development of cervical cancer(peripheral blood). Gating strategy to identify PD1 on CD4+CD25+CD127-/lowTregs(regulatory T cells) of CC, CIN, Chronic Cervicitis, HPV+ and NC in peripheral blood(A-C ).The plots show combined date for flow cytometric analysis of levels of CD4+ T cell(D), CD4+CD25+CD127-/lowTregs(E ) and PD1 expression on CD4+CD25+CD127-/lowTregs(F ) in CC, CIN, Chronic Cervicitis, HPV+ and NC. Scatter plot: Each dot represents one individual. Data are reported as mean±SEM. *P <0.05;**P <0.01;***P <0.001;****P <0.0001(Student’s t test and ordinary one-way ANOVA).