21.   Such work is considered essential in studying human genetics and in testing some types of new drugs.

22.   Taking the new drug had a dramatic effect on his health.

23.   The agency hoped to hasten the approval process for new drugs.

24.   The Medical Research Council has approved the use of a new drug for breast cancer.

25.   The Medical Research Council said it could not approve the use of the new drug without further tests.

26.   The new drug comes from an unexpected source -- potatoes.

27.   The new drug has become the subject of heated debate within the medical profession.

28.   The new drug is being evaluated in clinical trials.

29.   The new drug is being tested by cancer specialists.

30.   The new drugs were widely acclaimed, as so many other medical and surgical procedures had been.