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Correlation analysis between MVD, EA and Ki-67 proliferation index in pancreatic ductal adenocarcinoma tissue. (A) MVD and EA (r=0.80; P=0.001); (B) MVD and Ki-67 (r=0.72; P=0.003); (C) EA and Ki-67 (r=0.65; P=0.004). MVD, microvascular density; EA, endothelial area.
