IGF1 belongs to the insulin gene family. It is a mitogenic polypeptide growth factor that stimulates the proliferation and survival of various cell types including muscle, ben, and cartilage tissue in vitro. IGF1 DES is a truncated variant of human IGF1 with the tripeptide Gly-Pro-Glu absent from the N-terminus. It has been isolated from bovine colostrum, human brain, and porcine uterus. …