41.   That work in animals led to use of the drug in humans.

42.   That work led him to the support group.

43.   That work led him, after little more than a decade, to the conquest of polio.

44.   That work led to broader understanding of connective-tissue functions.

45.   The new work may also lead to much swifter diagnosis of cancers, where telomerase activity would appear where it does not belong.

46.   The researchers believe their work could lead to a new generation of amphibian robots.

47.   The scientists say the work has led to a sobering conclusion.

48.   The researchers said that their work might eventually lead to the development of new bug repellents.

49.   The researchers suggest their work may lead to genetic modifications of plants to make them more drought-resistant.

50.   The work could also lead to better drugs for treating Shigella and similar disorders.