31.   Now, fears of bioterrorism may spur more companies to develop new drugs to fight bacterial infections.

32.   One difficulty in developing a vaccine to fight bacterial infections is in the way a vaccine works.

33.   One is the standard blood test that detects the antibodies that are formed to fight infections.

34.   Outside the U.S., sales were hurt by the rising value of the dollar against foreign currencies and lower sales of drugs to fight infection.

35.   She could have seen if those rat cells could fight mouse infections, Feinberg said.

36.   She takes antibiotics to fight infections in her lungs and bladder.

37.   T-cells are a component of human blood that are key to fighting infection.

38.   The drug has been shown to fight the infection in infants and older children, the company said.

39.   The injury is caused by proteins that normally fight viral infections.

40.   The idea is to keep the T cells from getting to the skin but to allow them to survive in the blood, where they fight infections.