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Cellular view

By Fort Collins Science Center January 2019 (approx.)
View of individual tree cells stained purple and labeled lignifying zone, cambial zone, and phloem
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Detailed Description

Photograph of the cells that make up the xylem, phloem, and cambium at the interface between the bark and wood of a ponderosa pine. Photo by Kiyomi Morino, University of Arizona.

Sources/Usage

Public Domain.