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selenium (Se)
Pronunciation (se-le'ne-um)
- A metallic element chemically similar to sulfur, atomic no. 34, atomic wt. 78.96; an essential trace element toxic in large quantities that is required for glutathione peroxidase and a few other enzymes; 75Se (half-life equal to 119.78 days) is used in scintography of the pancreas and parathyroid glands.
[G. selene, moon]
WebMD Medical Reference from "Stedman's Medical Dictionary"
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Stedman’s Medical Dictionary 28th Edition, Copyright© 2006_Lippincott Williams & Wilkins. All rights reserved.
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