41.   Many were simply prototypes in corporate research labs.

42.   Now would be a great time, say sociologists, for a high-ranking doctor at a research lab to announce a breakthrough in the fight to cure cancer.

43.   Not the professors holed up in a research lab, wracking their brains in search of a cure for a deadly disease or to enhance space travel.

44.   Often companies or research labs will simply push aside the people who give them problems and hire younger, more compliant workers.

45.   Procter also hopes to use some of the coloring products it has been developing at its research labs in Britain under the Clairol brand.

46.   Procter has been test-marketing coloring products that it developed from its research labs in Britain.

47.   She and her sister became chemistry majors and worked in chemistry research labs during the school year and summers.

48.   Spurning research labs with the latest technology, Dr. Thomas Nigra has spent weeks in a parking garage searching for answers to some ancient questions.

49.   Taiwan and South Korea are luring expatriates back from Silicon Valley to run research labs and startup companies in new industrial parks.

50.   The accident followed two other incidents in recent weeks in which scientists and workers at the research lab in Upton, N.Y., were exposed to potentially hazardous materials.