Word: macnab
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Dates: during 1970-1979
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...Howard Bates Noble, a Chicago orthopedic surgeon who has sent 20 to 25 patients to Canada-and needed help himself. As he puts it: "Faced with the choice of surgery or chymopapain, I decided to put my back where my mouth was." So he referred himself to Dr. Ian Macnab at Toronto's Wellesley Hospital, who injected him with chymopapain last year. Now, Noble says, his back troubles have disappeared...
Biochemists Robert M. Macnab and Daniel Koshland were investigating a characteristic that S. typhimurium shares with many other bacteria: it responds strongly to changes in external stimuli. If, for instance, a hostile substance is introduced into its surroundings, the bacterium uses its flagella -long, hairlike appendages-to swim away from it. But if something attractive is placed near by-say, the sugar, glucose-it will move toward it. How the bacterium chooses its direction is still not fully understood, but it apparently makes its way on a trial-and-error basis. Tumbling to and fro, it senses that taking certain...