Tracheids are a kind of xylem. Photomicrograph, longitudinal section of gymnosperm.

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Photo credit: © José María Barres Manuel / Alamy / Afripics
License: Royalty Free
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Keywords: botany, gymnosperm, histology, leñosos, longitudinal, microscope, photomicrograph, pits, plant, punteaduras, section, tissues, tracheids, traqueidas, vasos, vessel, xilema, xylem