21.   First in line for study are some experimental drugs that might inhibit those enzymes that damage TnI.

22.   Grapefruit juice contains a number of substances, including furanocoumarin derivatives, that can inhibit an enzyme used to break down certain drugs.

23.   The drug maker said an experimental drug appears to inhibit an enzyme linked to some types of cancer.

24.   The new drug is a member of the new class of drugs called camptothecins, which work by inhibiting an enzyme associated with the deadly form of cancer.