Keywords Rectal neoplasm;Cyclooxygenase;Vascular endothelial growth factor;Angiogenesis;Immunohistochemical staining;Lymphangiogenesis;Celebrex;Human colon carcinoma Cell line;Transplant tumor;

• 直肠肿瘤;环氧化酶;血管内皮生长因子;新生血管生成;免疫组织化学染色;新生淋巴管生成;淋巴管生成;塞来昔布;人肠癌细胞株;移植瘤;