metallothionein

[ mĭ-tăl′ō-thī′ə-nēĭn ]

n.

A small metal-binding protein, rich in sulfur-containing amino acids, that is synthesized in the liver and kidney and important in ion transport.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.