Pine Stem - Stock Image - C008/5167 - Science Photo Library

Cross section of a pine stem, (Pinus sp.); periderm, cortex, resin ducts, secondary phloem, secondary xylem and the primary xylem are all visible. 6x Bright Field. MICHAEL ABBEY/SCIENCE PHOTO LIBRARY

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Pine tree stem cross-section, light micrograph - Stock Image - C047/6328 - Science Photo Library

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File:Plant stem (255 10) Cross-section of stem of pine tree (woody tissue).jpg - Wikimedia Commons

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Pine stem cross section hi-res stock photography and images - Alamy

Microscopic image of Pine Stem (cross-section) Stock Photo