Nerve growth factor (NGF) is a protein that plays a crucial role in the growth, maintenance, and survival of certain types of neurons in the nervous system. It is essential for the development of the peripheral nervous system and helps neurons communicate effectively. NGF is produced by various cells in the body and binds to specific receptors on neurons, promoting their growth and health. In addition to its role in neuron survival, NGF is involved in the repair processes following nerve injury. It can stimulate the regeneration of damaged nerves, making it a key focus in research related to neurodegenerative diseases and nerve injuries. Understanding NGF's functions may lead to new treatments for conditions affecting the nervous system.