Black Walnut leaf x-section
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Black Walnut leaf x-section

March 7, 2013
Scanning electron microscope image of Juglan nigra (Black Walnut tree) x-section of leaf. Image shows upper epidermal layer, mesophyll layer with palisade cells and vascular bundles, and lower epidermal layer. Juglandales Juglandaceae (walnut family) Juglan nigra Zeiss DSM 962 SEM Credit: Louisa Howard

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