Leukotriene B4 is primarily involved in inflammatory processes and acts as a potent mediator of immune responses. It plays a key role in recruiting and activating white blood cells, especially neutrophils, to sites of inflammation, making it significant in conditions like arthritis, asthma, and inflammatory bowel disease. Due to its role in promoting inflammation, it is a target for research in developing anti-inflammatory drugs. It also contributes to the pathogenesis of atherosclerosis and psoriasis by enhancing leukocyte adhesion and migration into tissues. In research settings, Leukotriene B4 is used to study signaling pathways related to inflammation and immune cell function.