51.   Dr. David King led efforts to pinpoint the location of the gene.

52.   Dr. Dianne Murphy of the F.D.A. is leading efforts to test medications on children.

53.   Dr. Kock leads an effort to save the endangered animals, airlifting them to the park from another region.

54.   Dr. William Stason, a cardiologist who led the effort, said it is not an attempt to block public disclosure of physician performance.

55.   Enron chairman and CEO Ken Lay led the efforts to deregulate the natural gas industry a decade ago.

56.   Finally, with US Senator Edward M. Kennedy and US Representative John Lewis leading the effort, Congress will hear legislation calling for health care fairness.

57.   Freeman, whom Cuomo appointed six months ago, is leading the effort to promote the takeover.

58.   Germany is leading efforts to clamp down.

59.   Freedman led the effort by forcing three fumbles, recovering one, defending a pass and generally wreaking havoc.

60.   Gladis is helping lead an effort to make more capital market information publicly available.