Cystic fibrosis research.
In Virginia Morell's Research News article "New light on writing in the Americas" (18 Jan., p. 268), the illustrations on page 268 should have been credited to George Stuart of the National Geographic Society.
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D003550:Cystic Fibrosis; D006801:Humans; D009316:National Institutes of Health (U.S.); D012106:Research; D014481:United States