Medicine: Those Amazing Chemical Scissors
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One of those applications — the recombinant DNA technique — has begun to fulfill its widely her alded promise. By inserting genes into the DNA of a laboratory strain of the common intestinal bacterium E. coli, re searchers have induced the little bug to produce somatostatin, a mammalian brain hormone. Last month the bacterium manufactured synthetic human insulin, raising hopes that the hormone vital to the well-being of the world's diabetics may some day soon be available in virtually unlimited supply.
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