31.   If it takes, it will be the first time a human has been successfully treated with a heart valve partially grown in the lab.

32.   In some cases it is caused by some other form of underlying heart disease, including coronary artery disease, a heart attack or diseased heart valves.

33.   In rare instances, bacteria from the mouth can enter the bloodstream during dental work and cause potentially life-threatening infections of the heart valves.

34.   It would set limits on money awarded for injuries from products as diverse as food blenders, prescription drugs, heart valves and automobiles.

35.   It was a synthetic cork made, Mr. Montalieu said, from the same material used in artificial heart valves.

36.   Knoll officials said two studies showed no increased risk of heart valve problems for patients taking Meridia compared with those on placebo.

37.   Lillehei and his associates contributed to the design of four prosthetic heart valves, including the widely used St. Jude Medical Mechanical Heart Valve.

38.   Medtronic also makes and sells heart valves, catheters, neurological stimulation products and other medical devices.

39.   More than half the heart valves go to children, said Steven G. Anderson, president and chief executive officer.

40.   Most agreed that the likelihood of developing a problem with a heart valve depended on the length of time people took the drugs and on how much they took.