.

Fig1. Expression of PD1 , PD-L1 and related cytokines in the development of cervical cancer(serum/plasma). The serum levels of IL-2(A ), IL-6(B ), IL-10(C ),INF-γ(D )，TGF-β(E ), Foxp3(F ), PD-1(G ), and PD-L1(H ) inCC , cervical CIN , chronic cervicitis, HPV+and NC were measured with commercial ELISA kits. Data are reported as means±SEM.*P <0.05；**P <0.01；***P <0.001；****P <0.0001(Student’s t-test and ordinary one-way ANOVA).