vascular endothelial growth factor a vegf a protein molecule. cartoon representation combined with semi-transparent surfaces.

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