As a key angiogenic factor , vascular endothelial growth factor ( VEGF , also called VEGFa ) originally isolated from tumor cells , is involved in tumor cell proliferation , angiogenesis and metastasis .
作为重要的血管生成因子，VEGF（又称VEGFa）最初是从肿瘤细胞中发现，它参与肿瘤细胞的增殖、肿瘤血管的形成以及肿瘤的转移。
vegfa