BACKGROUND & OBJECTIVE: Angiogenin (ANG), an efficient angiogenesis factor, is up-regulated in human colorectal carcinoma, pancreatic carcinoma, and other tumors. But the function of ANG in tumor angiogenesis is still unknown.

• 背景与目的:血管生长素(angiogenin,ANG)是一种有效的促血管生成素,资料显示结肠癌、胰腺癌等肿瘤ANG表达增强,但ANG在肿瘤性血管生成中的作用尚不清楚。