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Druse crystals in the stem and leaf of Hedera helix (arrow). (A) Druse crystals in the cortex and pith cells of the stem. (B) Druse crystals in the pith cells of the stem. (C) Druse crystal in the cortex cells of the stem. (D-F) Distribution of druse crystals in leaf mesophyll cells. (Dc: Druse crystals).
