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| Matching Terms: | | kidney, kidney bean, kidney begonia, kidney disease, kidney failure, kidney fern, kidney pie, kidney stone, kidney stones, kidney threshold, kidney vetch, kidney wort, kidney-form, kidney-shaped, kidneywort
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 Medical Dictionary |
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| | Definition: | | A pair of organs in the abdomen that remove waste from the blood (as urine), produce erythropoietin (a substance that stimulates red blood cell production), and play a role in blood pressure regulation. |
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| Biology Dictionary |
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| | Definition: | | Two organs in the lower back that clean waste and poisons from the blood. The kidneys are shaped like two large beans, and they act as the body's filter. They also control the level of some chemicals in the blood such as hydrogen, sodium, potassium, and phosphate. |
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