Calcium oxalate Crystals in Cactus, LM

Calcium oxalate Crystals in Cactus, LM

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Credit: Ted Kinsman/SCIENCE PHOTO LIBRARY

Caption: Light micrograph (LM) showing numerous calcium oxalate crystals in the epidermal layer of a cactus (Cactaceae). Calcium oxalate crystals in plants are called raphides, in humans they can appear as kidney stones. These crystals help remove calcium build-up in the tissues and make it undesirable for herbivore animals to eat the plant. Magnification: 40X at 35mm.

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Keywords: botanical, botany, cactaceae, cactus, calcium oxalate, crystals, flora, light micrograph, lm, micrograph, plant, raphides, science

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