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Dictionary


ac•tin



Pronunciation: (ak'tun), [key]
n. Biochem.
a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction.

actin-




var. of actino- before a vowel: actinism.

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

ACTHactinal
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