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 in the repair of damaged nerves. NGF binds to specific receptors on the surface of nerve cells, promoting their growth and preventing cell death. In addition to its role in neuron health, NGF is involved in various biological processes, including pain perception and inflammation. It is produced by different cell types, including immune cells and muscle cells, and is important for the overall functioning of the nervous system.