False-colour SEM of crystals of caffeine

False-colour SEM of crystals of caffeine

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph of crystals of caffeine, a bitter alkaloid responsible for the stimulant action of tea, coffee and cocoa. Magnification: x200 at 6x4.5cm size. Yellow and blue version

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Keywords: caffeine, chemical, chemistry, compound, compounds, crystal, crystals, false-coloured, plm, polarised light micrograph

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