A monounsaturated fatty acid; a major component of membrane phospholipids; inhibits collagen-stimulated platelet aggregation at 10 μg/ml; inhibits fMLF-induced neutrophil aggregation and degranulation at 5 μM; induces release of intracellular calcium in human platelets at 60 μM; increases TNF-α, IL-8, IL-6, and IL-1β production, neutrophil accumulation, and apoptotic and necrotic cell death in mouse lung,