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Figure 3: Kaplan-Meier estimates of progression-free survival (PFS) and overall survival (OS). Left figure: PFS. Blue line: CIK cell treatment group. Red line: control group. Log-rank: . Right figure: OS. Blue line: CIK cell treatment group. Red line: control group. Log-rank: ; all patients were alive during the course of followup, and there were no statistically significant differences between two groups in OS.