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Kaplan–Meier curves of differences in survival among patients with hepatocellular carcinoma (HCC) who received adjuvant CIK cell treatment (CIK treatment group) or hepatectomy alone (surgery alone group). (A) Overall survival (OS) and (B) recurrence-free survival (RFS) curves. Significantly improved OS and PFS were observed in the CIK treatment group versus the surgery alone group.
