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A SEM micrograph of phytolithic silica viewed in the internal cross-section of a sliced flue cured cigarette filler tobacco leaf from a popular cigarette brand. This image was obtained in Low Vacuum mode with an accelerating voltage of 20 kV, 1.0 torr water vapor pressure in the sample chamber, spot size 3.0 with mixed Large Field (LFD) and Concentric Backscatter Detectors (CBS).
