Brain-derived neurotrophic factor (BDNF) is a small dimeric protein, structurally related to the nerve growth factor and is abundantly and widely expressed in the adult mammalian brain.

• 脑源性神经营养因数(BDNF)是一种在成年哺乳类大脑分布广泛的小二聚体蛋白，结构类似神经生长因数。