Immunogen sequence: YYNWVSFPGC LARGAETRGS SRMKTFEEFP MTPTTYKGSV DNQTDSGMVL ASEEFEQIES RHRQESGFSC KGPGQNVAVT RAHPDSQGRR RRPERGARGG. Vascular endothelial growth factor is a key regulator of blood vessel development in embryos and angiogenesis in adult tiss