Resin canal
Resin canals are elongated, tube-shaped intercellular spaces surrounded by epithelial cells that secrete resin into the canal. They exist in the wood of the genera Picea, Larix, Pinus, Pseudotsuga and Shorea.
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Wikipedia
Resin canals are elongated, tube-shaped intercellular spaces surrounded by epithelial cells that secrete resin into the canal. They exist in the wood of the genera Picea, Larix, Pinus, Pseudotsuga and Shorea.