Human FGF-9 protein is a member of the fibroblast growth factor (FGF) family, FGF-9 is involved in many developmental processes including neural and skeletal development. Recombinant FGF9 is used frequently in the generation of kidney organoids.Qkine recombinant human FGF9 is a highly pure and bioactive 23 kDa protein, animal origin-free (AOF) and carrier-protein free (CF).