Detection of Vascular Endothelial Growth Factor A (VEGF-A) expression in bladder transitional cell carcinoma, it studies their impact on the micro-vessel density (MVD), and in patients with transitional cell carcinoma of the age, gender, tumor grade, clinical staging and prognosis, so as to explore the bladder muscle VEGF-A in tumor angiogenesis that plays a role in its clinical significance.
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