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Dictionary

pro•en•zyme

Pronunciation: (prō-en'zīm), [key]
—n. Biochem.
any of a group of proteins that are converted to active enzymes by partial breakdown, as by the action of an acid or other enzyme. Also called zymogen.

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

proem

proestrus

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