Nitric oxide signaling is a research area that focuses on the role of nitric oxide (NO) in various physiological and pathological processes within the body. Nitric oxide is a free radical gas molecule that acts as a signaling molecule in the body, playing a key role in regulating various cellular processes such as vasodilation, neurotransmission, immune response, and inflammation. Dysregulation of nitric oxide signaling has been implicated in a wide range of diseases including cardiovascular disease, neurodegenerative disorders, and cancer. Researchers study the mechanisms of nitric oxide production, regulation, and function to better understand its role in health and disease, and to explore potential therapeutic strategies targeting the nitric oxide pathway.