Oak Gallnut with Pigmented Inclusions, LM

Oak Gallnut with Pigmented Inclusions, LM

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Credit: Garry DeLong/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of a section through an oak gall (oak apple), likely a reaction to an insect parasite. As shown here, galls often contain cells with inclusions of pigmented material, often tannin, which was until the 20th century in the production of a very permanent ink. Also present are several vascular bundles. Magnification 28x when printed at 10 cm.

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Keywords: acid, botanic, botanical, botany, cecidia, cell, cross section, gall, gallic, histology, ink, light micrograph, light microscope, lm, micrograph, microscope, oak gall, phloem, pigment, plant, stem, tannin, tissue, vascular bundle, wall, xylem

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