31.   The two drugs are the cornerstone of many combination therapies used to fight HIV, the virus that causes AIDS.

32.   This morning, the company said Canada has approved its CytoGam drug, which is used to fight diseases associated with kidney transplants.

33.   Three helicopters and four tanker planes were being used to fight the Arcadia fire.

34.   Two botanical insecticides are used to fight stink bugs.

35.   Yet Lyons said fire can be used to fight fire in many circumstances.

36.   Pharval Laboratories had sold two local brands of syrups used to fight fever.

37.   A drug used to fight nausea in cancer patients can help the most difficult-to-treat alcoholics significantly reduce their drinking, research suggests.

38.   A search of the scientific literature revealed that no pesticide or natural predator could be used to fight the beetles.

39.   A Singapore-based salvage expert has speculated that too much water was used to fight the fire, causing the ship to list.

40.   Although CFC concentrations in the atmosphere have started to decline, levels are rising for halon, which are no longer produced but are still used to fight fires.