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Association between COX-2 expression in human CRC and prognosis. (A) Kaplan-Meier survival curve based on COX-2 expression in human CRC. COX-2 = 0 represents grade 0 expression; COX-2 = 1–3, represents grade 1–3 expression. (B) Multivariate COX regression analysis of clinicopathologic parameters and COX-2 status as prognostic factors in patients with CRCs.
