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](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/Dendrochronology_3.png?itok=GLwvqyT7)
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.