11.   As the researchers had hoped, Prozac had fewer side effects than the tricyclics, and many psychiatrists said the drug revolutionized the treatment of depression.

12.   Atlanta researchers hope the ability to add will be the first step to a more sophisticated and new type of thinking for a computer.

13.   Because most major ailments involve the death of cells, researchers hope that stem cells can cure diseases by replacing damaged tissue.

14.   Beyond that, researchers hope to be able to grow laboratory teeth that can be implanted in a human mouth.

15.   A new clinical study of the hormone leptin finds that it is not the weight-loss panacea that obesity researchers had hoped for.

16.   But many researchers had hoped the virus would simply burn itself out after early, aggressive and extensive drug treatment.

17.   But on Tuesday, the first published clinical study of leptin finds that the substance is not the weight loss panacea that obesity researchers had hoped for.

18.   But the researchers hope they will soon be able to test new vaccines, drugs and diagnostic tools for smallpox.

19.   But the researchers hope one of the first applications will be delivering melatonin to astronauts to regulate their sleep patterns.

20.   But Tuesday, the first published clinical study of leptin finds that the substance is not the weight loss panacea that obesity researchers had hoped for.