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activin

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ac⋅ti⋅vin

[ak-tuh-vin]
–noun Biochemistry.
a peptide that is synthesized in the pituitary gland and gonads and stimulates the secretion of FSH.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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ac·ti·vin   (āk'tə-vĭn, āk-tĭv'ĭn)   
n.  A polypeptide growth factor that is synthesized in the pituitary gland and the gonads and stimulates the secretion of follicle stimulating hormone.

[activ(ate) + (inhib)in (from its activating follicle stimulating hormone).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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