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://storeanimalwiz.shop/product-category/sand/