UPDATE 1-Sanofi's dual-action biotech asthma drug performs well in test
(Adds detail on drug's other uses, Sanofi investor day) Nov 11 (Reuters) - An experimental biotech drug for moderate to severe asthma from France's Sanofi and its U.S. partner Regeneron has produced good results in clinical tests, suggesting that its dual-action mechanism may be highly effe
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