I'll look it up in "Dangerous properties Of Industrial Materials"
Says, "Synonym; argentum" and has warnings about silver compounds causing generalized argyria. Then I suppose, the pure silver forms a compound with other elements and molecules and is deposited in the blood vessel walls, kidneys, testes, pituitary, bronchi, etc. Once deposited in the body, there is no known method by which the silver can be eliminated, it says here. Lowestlethal dose in humans is 0.7 mg/kg of body wt. But when given a much higher dose(100 mg/kg of body wt.) to a bunch of rats only half of them died!
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Jim M