Objective To study the expression of signal transduction and transcription activation factor 3(Stat3),anaerobic induced factor-1α(HIF-1α),and vascular endothelial growth factor(VEGF)in human pancreatic ductal adenocarcinoma tissues and its correlation with clinicopathological features. Methods Using immunohistochemistry(SABC method),the expressions of Stat3,HIF-1α,and VEGF were detected in 49cases of pancreatic ductal adenocarcinoma tissues and 10cases of normal pancreatic tissues. Results The positive expr...