vascular endothelial growth factor a vegf a protein molecule. atoms are represented as spheres with conventional color coding.

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