Abbkine/亚科因重组人骨形态发生蛋白9通过LAL法测定，每微克蛋白里内毒素含量<1 EU。

GDF-2 belongs to the TGF- β cytokine family, whose members play an important role during prenatal　development and postnatal growth, and the remodeling and maintenance of a variety of tissues and organs. GDF-2 is　expressed mainly in non-parenchymal cells of the liver, but is also found in other various cells and tissues. GDF-2 can signal　through the ALK1 receptor, and has been implicated in a number of physiologic events including the regulation of the hepatic　reticuloendothelial system, glucose homeostasis, iron homeostasis, and the inhibition of angiogenesis. Recombinant Human　GDF-2 is a disulfide-linked homodimeric protein consisting of two 110 amino acid polypeptide chains.