71.   Antisense drugs are essentially short sequences of genetic code that work by preventing formation of specific proteins that cause or contribute to disease.

72.   Around Paris, motorists trying to get to work by car were again stuck in bumper-to-bumper traffic, even in non-peak hours.

73.   As for hypnosis, it works by changing the pain perception through intense relaxation.

74.   As he begins to learn the game, tutored by some of the greats and describing their thoughts and eccentricities, Fatsis initially works by rote.

75.   As the name implies, ink jet printers work by spraying a jet of ink at the paper.

76.   Asynchronous technology works by routing data in discrete packets each with its own address, rather than in continuous data streams.

77.   Aspirin and other nonsteroidal anti-inflammatory drugs work by inhibiting both forms of COX, thus raising the risk of ulcers.

78.   At Bloomfield, students spend most of the day working by themselves at their desks, old-fashioned wood-topped tables with attached chairs arranged in rows.

79.   At first we tried to make everything work by sending e-mail back and forth.

80.   At the same, the company has stepped up its spending to expand into products that allow corporate employees to work together by exchanging documents.