STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Olive leaf. Light micrograph (LM) of a section through the mid rib of an olive leaf (Olea sativa). It has a thickened epidermis for water retention. The large central vascular bundle contains xylem surrounded by phloem. Magnification: x80 when printed at 10 centimetres wide.
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