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from article Anemia
Hemoglobin molecule. (Copyright © McGraw-Hill Education)
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from article Anemia
Aplastic anemia. This low-power photomicrograph of the bone marrow exhibits only a small amount of hematopoiesis (the process by which the cellular elements of the blood are formed). (Copyright © McGraw-Hill Education)
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from article Anemia
Iron-deficiency anemia. Most red cells in this photomicrograph exhibit central pallor (arrow). Also present is a characteristic pencil-shaped cell (arrowhead). (Copyright © McGraw-Hill Education)
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from article Life forms of plants
Life forms of plants according to C. Raunkiaer. (After P. Dansereau, Biogeography: An Ecological Perspective, Ronald Press, 1957)
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from article Life forms of plants
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from article Thrombosis
Organized thrombus in an artery with recanalization.
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from article Thrombosis
Organized thrombus in an artery with scar formation; the artery is completely occluded by the fibrotic mass.
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from article Clover
Red clover (Trifolium pratense). (Photo by Tom Heutte, U.S. Department of Agriculture Forest Service)
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from article Clover
White clover (Trifolium repens). (Photo by Pavel Šinkyřík)
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from article Clover
Crimson clover (Trifolium incarnatum). (Photo by Pavel Šinkyřík)
