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Association of cathepsin B, cathepsin D and VEGF expression in breast cancer tissues with disease-free survival of breast cancer patients. Kaplan-Meier curve of survival of patients according to (A) cathepsin B expression (P<0.001), (B) cathepsin D expression (P=0.050) and (C) VEGF expression (P=0.041). VEGF, vascular endothelial growth factor; Cum survival, cumulative survival; DDFS, distant disease-free survival; Cat., cathepsin; 0, low expression; 1, high expression.
