vascular endothelial growth factor a (vegf a) protein molecule. 3d rendering. cartoon representation combined with semi-

vegf hvegf vascular endothelial growth factor permeability vpf signal vasculogenesis angiogenesis oxygen blood cancer retina bevacizumab ranibizumab endothelium diabetic retinopathy breast agerelated macular degeneration amd pdb1tzi structure peptide protein 3d rendering amino acid molecule polypeptide polymer atoms science scientific disease health molecular model