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      Scientific American October 1998

      Bloodless Testing

      Noninvasive glucose monitors for diabetics are on the way, but cost could be a problem

      • By Roxanne Nelson on October 1, 1998

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      More in the October 1998 issue of Scientific American
      • 50, 100 and 150 Years Ago: Red Scare, Ethereal Chemistry and Modern Barometer
      • Digital Certificates
      • How Hackers Break In. . . and how they are Caught
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