21.   When a surgeon used electrocautery to stop bleeding around the windpipe, a flash fire ignited.

22.   President Bush said Thursday that his administration is reviewing U.S. aid to Russia used to stop the spread of nuclear, biological, and chemical weapons.

23.   Abortions are widely used to stop unauthorized or unwanted pregnancies, putting the health of many women at risk.

24.   Antitrust laws cannot be used to stop the NBA or other employers from imposing work rules while a collective bargaining relationship exists, a federal appellate court ruled Tuesday.

25.   APTV looks at how expertise used to stop the Tower of Pisa falling is being put into practice to keep Big Ben upright.

26.   But advanced toxicology tests determined the patients were given succinylcholine, a drug used to stop breathing temporarily, for example when a breathing tube is inserted before surgery.

27.   Chavancy said force may be used to stop the Serb firing.

28.   Iranian troops along the Afghanistan border would be used to stop Afghan refugees from entering Iran, he said.

29.   President Bush said Thursday that his administration is reviewing U.S. aid to Russia used to stop the spread of nuclear, biological and chemical weapons.

30.   Scientists are currently testing whether nitric oxide cane be used to stop the growth of tumors.