You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which one of the following molecules is used for cell signaling? and explain in detail?
Nitric Oxide (NO) is a major signaling molecule in neurons and in the immune system, either acting within the cell in which it is produced or by penetrating cellmembranes to affect adjacent cells. Nitric oxide is generated from arginine by the action of nitric oxidesynthases (NOS) Ref guyton and hall textbook of medical physiology 12/e pg 29