A cholesterol ester; a component of LDL; oxidiation of the arachidonate moiety contributes contributes to macrophage activation and foam cell formation in atherosclerosis; undergoes hydrolysis to release arachidonic acid during ACTH-stimulated prostaglandin synthesis in rat adrenocortical cells; levels increased in BLAF in pediatric cycstic fibrosis patients and placentas of women with chorioamnionitis