Transversal section of pine trunk. Optical microscope X40.

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Photo credit: © José María Barres Manuel / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: annual, botany, canal, cross, growth, histology, micrograph, microphotography, microscope, optical, parenchyma, pinaceae, pine, pinus, resin, ring, section, slide, tracheid, transversal, vegetal