No expression of B7-2 was detected in intercapillary cells, vascular endothelial cells and nephric tubule endothelial.

系膜细胞，肾小管上皮细胞和血管内皮细胞表达均阴性。

The growth,infiltration and metastasis of oncoma depend on tumor angiogenesis.Vascular endothelial growth factor(VEGF)is the most important irritant factor of angiogenesis.

肿瘤的生长、浸润和转移依赖于肿瘤血管生成,血管内皮生长因子(VEGF)是最重要的一种血管生成刺激因子。

Vascular endothelial growth factor(VEGF) is also named as vascular permeability factor(VPF),which is a powerful angiogenesis and vascular diosmosis promoter discovered at present.

血管内皮生长因子(VEGF)又称血管通透因子(VPF),是目前发现的一种强有力的血管生成和血管渗透促进因子。