The painkilling, antipyretic, and antiinflammatory properties of aspirin have been known for centuries. The understanding that aspirin targets cyclooxygenase-1 (COX-1) (also known as prostaglandin-endoperoxide synthase 2 [PTGS1]) and COX-2 (also known as PTGS2), which are key enzymes required for prostaglandin synthesis, provided a rationale for using aspirin to treat thrombosis….