777799 44 Phospholipase A2 Injury or other stimulus Arachidonic acid Cyclooxygenase 5-Lipoxygenase (COX) Prostaglandin G2 5-HPETE Prostaglandin H2 Leukotriene A4 Prostaglandin 12 Prostaglandin E2 Thromboxane A2 Leukotriene B4 Leukotriene C4 Prostaglandin F2c Leukotriene D4 Leukotriene E4