Spiral vessel from rhubarb, polarised light micrograph

Spiral vessel from rhubarb, polarised light micrograph

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Credit: STEVE LOWRY/SCIENCE PHOTO LIBRARY

Caption: Polarised light micrograph of a spiral vessel from the stem of a rhubarb plant (Rheum rhabarbarum). Spiral vessels are found in most plants. They may be concerned with water or air movement within the plant. They were first described by Marcello Malpighi in 1662, but information about their exact function is still vague. Magnification: x136 at 10cm wide.

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Keywords: air, biological, biology, black background, botanical, botany, flora, microscope, microscopic, microscopy, nature, plant, plant anatomy, polarised light micrograph, polarized, rheum, rheum rhabarbarum, rhubarb, spiral vessels, vessels, water

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