vascular endothelial growth factor n a protein that is a major factor in promoting the growth of new blood vessels abbr. VEGF
* * *
(VEGF), vascular permeability factor (VPF) a peptide factor, existing in four forms with different lengths (121, 165, 189, and 206 amino acids), that is mitogenic for vascular endothelial cells and promotes tissue vascularization; levels are elevated in hypoxia and it is important in tumor angiogenesis.Medical dictionary. 2011.