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Pronunciation: aw′tō-as′ā

Definition: Detection or estimation of the amount of a substance produced in an organism by means of a test object in that organism, as, for example, use of the denervated heart in situ of a cat to assay for epinephrine or sympathin liberated into its bloodstream.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.