31.   But some analysts apparently were concerned about side effects and that the drug did not work in many patients with tumors resistant to Taxol.

32.   But the drug also works in a seemingly unrelated cancer, gastrointestinal stromal tumor, known as GIST, because it has a somewhat similar signaling protein.

33.   But the drug did not work as well as diet, exercise and weight loss.

34.   But the drug does not work for everyone.

35.   But the drug can work only if administered quickly.

36.   But the task is challenging because most drugs work by inhibiting processes in the body, not by restoring the lost activity of genes.

37.   But there is no evidence that the other drugs work any less well, said Dr. Sandra Kweder of the FDA.

38.   But, lo, the drugs finally worked.

39.   Convinced that his job was on the line, he also was convinced that the drugs worked.

40.   Current osteoporosis drugs work by slowing the rate of bone loss.