3-a26f05.jpg
Description:
Many plant stems have a circular cross-section with a structure made of a dense outer shell surrounding an inner layer of low density, foam-like cells.(Photo by Prof. Lorna Gibson.)
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3-a26f05.jpg
Alt text:
A microscope photograph of a plant stem's cross-section.
Caption:
Many plant stems have a circular cross-section with a structure made of a dense outer shell surrounding an inner layer of low density, foam-like cells. (Photo by Prof. Lorna Gibson.)

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Fall
2005
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Course Introduction