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Kaplan-Meier estimates of gastric cancer patients stratified by the expression of PARP-1. Survival rate curves indicating that PARP-1 expression levels were significantly associated with a shorter (A) OS and (B) DFS. The log-rank test was performed to test the statistical significance. PARP-1, poly (adenosine diphosphate-ribose) polymerase 1; OS, overall survival; DFS, disease-free survival.
