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Down-regulation of CSR1 expression and methylation of CSR1 promoter is associated with decrease of PSA-free survival. A: Kaplan-Meier curve of PSA-free survival based on immunostaining of CSR1 in prostate cancer samples. Prostate cancer samples were divided into CSR ≥1 or ≤0.5. B: Kaplan-Meier curve of PSA-free survival based on the methylation status of the CSR1 promoter.
