Word: impair
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Lindow and Panopoulos proceeded to expose large numbers of P. syringae to chemicals, and were able to impair in some of them the gene that orders production of the protein. When these altered microbes were sprayed on plants in greenhouses and open fields, they seemed to retard the formation of frost. Equally important, they apparently did not spread or do any harm, and most gradually died out. Their release into the open went unnoticed--or at least unchallenged--because they had been altered by conventional laboratory methods...
...officials had a chance to debrief Presidential Envoy Philip Habib, who was flying home from the Philippines, the White House issued its strongest expression yet of anti- Marcos sentiment. Although the statement stopped short of endorsing the rebellion, it denounced Marcos for electoral fraud "so extreme as to impair the capacity of government in the Philippines...
...region. The Philippines is an important member of the Association of South East Asian Nations, a six-nation group* that has enjoyed surprising stability and prosperity in the wake of the U.S. defeat in Viet Nam. Collapse of the Philippines in the face of a Communist insurgency would severely impair the security of the remaining ASEAN members and pose a threat to U.S. allies as far away as Australia...
...College will continue to consider the issue of whether the ban would seriously impair house social life, as committee chairmen have said...
Lecturer on Astronomy David Latham, who is in charge of the daily operation of the telescope, said the proximity of the telescope to the city lights of Boston may impair viewing of the comet. "For the comet, better viewing might be had 20 or 30 miles away from the city, with field glasses," said Latham...