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| | Mineral, dietary - Facts from the Encyclopedia - Yahoo! Education (Site not responding. Last check: 2007-10-26) |
 | | Calcium occurs mainly in the teeth and bones, but a small amount is found in blood plasma and other body fluids, where it influences nerve transmission, blood clotting, and muscle contraction. |
 | | The essential trace minerals include iron, which is a constituent of hemoglobin; iodine, which is necessary for thyroxine synthesis; and cobalt, which is a component of vitamin B |
 | | Other essential trace minerals are chromium, copper, fluorine, manganese, molybdenum, selenium, and zinc. |
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