BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Colour-enhanced Scanning Electron Micrograph (SEM) of a broad bean (Vicia faba), sectional view showing upper epidermis and palisade mesophyll cells of mature leaf showing intercellular strands of pectic matrix material (pectic scalae). This material is pulled into strands as the leaves expand and enlarge. Magnification: 1260x.
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