21.   The drug appeared to affect brain centers involved in emotion, learning, memory and other functions.

22.   The drug also appeared to help prevent a cancer of the uterus lining, the company said.

23.   The drug appears effective but can also cause diarrhea, researchers warned.

24.   The drugs appear effective for bladder, skin, and esophageal cancers as well.

25.   The drug also appeared to have no more side effects than heparin, researchers said.

26.   The drug appears highly effective with few major side effects.

27.   The drug appears to work by stabilizing cell membranes and, in high doses, absorbing toxic molecules called free radicals, which damage blood vessels and nerve cells.

28.   The list of drugs that slow the rate of incubation is increasing, and some known drugs appear to help, including the antifungal drug amphotericin B.

29.   The new drugs appear to be helping some patients, Harbut said.

30.   The new drugs appear to be as good or better than existing therapies but with fewer side effects.