Human FGF-9 protein, also known as fibroblast growth factor 9, is a member of the fibroblast growth factor (FGF) family. It functions as a signaling molecule, regulating various cellular processes like cell proliferation, differentiation, and migration. FGF-9 protein plays a vital role in various physiological and pathological processes, making it an important focus of research in the field of molecular biology and medicine.