Gonadotropin-releasing hormone (GnRH) is an evolutionarily conserved neuropeptide with 10 amino acid residues. of which several structural variants exist. A molecular form known as GnRH2 ([His5 Trp7 Tyr8]GnRH. also known as chicken GnRH II) is widely distributed in vertebrates except for rodents. https://www.markbroyard.com/amazing-price-color-touch-7-97-medium-blonde-cendre-brown-online-now-mega-choice/