noun
EXAMPLES FROM CORPUS
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Division of these cells adds new bark to the outer side of the cambium and new sapwood to the inside.
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The growth region is a thin band of cells called the cambium, which lies between the bark and the sapwood .
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The infection court, said Ketchledge, permits the fungus to enter the cambium layer and the sapwood through the aggregated wounds.
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Where most or all of the sapwood is missing, the felling date can not be identified.