The cyclooxygenase isoenzymes COX-1 and
COX-2 differ from each other in that:
A. They catalyse different pathways in prostanoid
biosynthesis
B. COX-1 is inhibited by aspirin but not
COX-2
C. COX-2 is inhibited by ibuprofen but not
COX-1
D. COX-1 is constitutive while COX-2 is largely
inducible
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