Caffeine Crystals, SEM

Caffeine Crystals, SEM

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Credit: Ted Kinsman/SCIENCE PHOTO LIBRARY

Caption: Coloured scanning electron micrograph (SEM) of caffeine crystals (1,3,7-trimethylxanthine). Caffeine stimulates the central nervous system (CNS), increasing alertness and deferring fatigue. It occurs in coffee beans and tea leaves. Magnification: 150x at .8mm wide.

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Keywords: 1 3 7 trimethylxanthine, 1 3 7-trimethylxanthine, bw, caffeinated, caffeination, caffeine, chemical, chemistry, coffee, crystal, crystals, scanning electron micrograph, scanning electron microscope, sem, stimulant, tea

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