Inducible NOS, or inducible nitric oxide synthase, is an enzyme that produces nitric oxide (NO) in response to inflammatory signals. Unlike other forms of nitric oxide synthase, it is not constantly present in cells but is produced when needed, particularly during immune responses. This process helps regulate blood flow and immune function. When inducible NOS is activated, it can lead to increased levels of nitric oxide, which plays a crucial role in signaling pathways. While beneficial in fighting infections and regulating inflammation, excessive production of NO can contribute to tissue damage and various diseases, highlighting the importance of its regulation in the body.