Elevated Expression of Programmed Death-1 and Programmed Death Ligand-1 Negatively Regulates Immune Response against Cervical Cancer Cells

Figure 3

Correlation analyses between CD4+CD25+PD-1+Treg and (a) TGF-β, (b) IL-10, or (c) IFN-γ. The fitted lines in (a) and (b) indicate positive correlation, while the fitted line in (c) shows negative correlation.

(a)

(b)

(c)