Pathology Which one of the following is NOT true about chemical mediators: A Leukotrienes are formed by lipo-oxygenase pathway B Histamine is a preformed chemical mediator C Prostaglandin causes vasoconstriction at the site of inflammation D Thromboxane A2 is associated with platelet aggregation 💡 Explanation Which one of the following is NOT true about chemical mediators: ✓ Correct Answer: C. Prostaglandin causes vasoconstriction at the site of inflammation