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Pronunciation: (lek'tin), [key]
n. Biochem.
any of a group of proteins that bind to particular carbohydrates in the manner of an antibody and are commonly extracted from plants for use as an agglutinin, as in clumping red blood cells for blood typing.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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