CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY
Light micrograph of cells in a section of a leaf from the Canadian pondweed, Elodea canadensis. The tiny green particles within the cells are chloroplasts. These contain the green pigment chlorophyll and are the sites of cell photosynthesis. Magnification: x250 at 35mm size.
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