Growth differentiation factor (GDF) are proteins which function in development.
- GDF-2 or bone morphogenetic protein 9 maintains the response of cholinergic neurons to acetylcholine.
- GDF-5 is expressed in the central nervous system and is involved in the development of joints and skeleton.
- GDF-8 or myostatin, controls the growth of muscle tissue. For more details see Group:MUZIC:Myostatin.