11.   Earlier research had found that the drug appeared to cause a surge of serotonin.

12.   He also said the study indicates only that anti-inflammatory drugs appear to mitigate or postpone cognitive impairment, rather than prevent it.

13.   He noted that the drug appeared to avoid resistance and to be active against a broad range of bacteria.

14.   If the drugs appear promising, the testing continues in animal, then human studies.

15.   In Phase II, another small group is tested to determine whether the drug appears to produce the desired effect.

16.   Law enforcement officials said drugs appeared to play a part in the explosion of violence.

17.   The drug also appeared to increase the effectiveness of cholesterol-lowering drugs.

18.   The drug appears to reactivate AZT, the standard AIDS treatment, after the virus becomes resistant to it.

19.   The drugs appear to be no more effective at fighting pain than traditional anti-inflammatory medications such as ibuprofen and aspirin, but offer the advantage of fewer side effects.

20.   The drug also appears to have beneficial effects in staving off drug resistance, a common problem in HIV treatment, researchers said.