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Microphotos of powdered stem bark substance of Ailanthus altissima: (a) cork on surface view; (b) phloem parenchyma with crystalline druses; (c) phloem fiber bundle; (d) sheath of sclereids around phloem fibers; (e) fragment of phloem with schizogenous oil gland; (f) fragment of phelloderma with chloroplasts; (g) oxalate crystal cubes around a group of sclereids.
