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 Image Number D2438-1 |
Chemists Craig Byrdwell (foreground) and James Harnly, with the Beltsville Human Nutrition Research Center, review data from one of the liquid chromatography/mass spectrometry machines used in a process called “triple-parallel mass spectrometry.” They use this procedure to analyze the amount of vitamin D in milk, orange juice, and dietary supplements.
Photo by Stephen Ausmus.
