Inflammation is a complex tissue reaction that includes the release of cytokines, leukotrienes, prostaglandins, and peptides. Prostaglandins involved in inflammatory processes are produced from arachidonic acid by (a) Cyclooxygenase 1 (b) Cyclooxygenase 2 (c) Glutathione – S – transferase (d) Lipoxygenase (e) Phospholipase A2