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ASSAY. A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. 2. By the acts of Congress of March 3, 1823, 3 Story's L. U. S. 1924; of June 25, 1834, 4 Shars. cont. Story's L. U. S. 2373; and of June 28, 1834, Id. 2377, it is made the duty of the secretary of the treasury to cause assays to be made at the mint of the United States, of certain coins made current by the said acts, and to make report of the result thereof to congress.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
Sera were tested by ELISA, an enzyme-linked immunosorbent assay method (Magnarelli et al., 1989) for the presence of antibodies to B.burgdorferi.
Measurement of aflatoxin in Nigerian sera by enzyme-linked immunosorbent assay. Trans R Sec Trop Med Hyg 82:169-171.
In a preliminary study, a recently developed commercial blocking enzyme-linked immunosorbent assay (bELISA) had sensitivity and specificity estimates of 82% and 100%, respectively, for detection of antibodies to AI virus in multiple wild bird species after experimental infection.
We screened for the Echinococcus-specific coproantigen by using a commercial enzyme-linked immunosorbent assay kit (CHEKIT-Echinotest, Bommeli Diagnostics, Liebefeld-Bern, Switzerland) and following the manufacturer's recommendations.
Samples were tested for the presence of pepsin or pepsinogen by both a proteolytic enzyme assay and enzyme-linked immunosorbent assay (ELISA) specific for pepsinogen 1.
The state-of-the-art technique for detecting allergen residues is the enzyme-linked immunosorbent assay (ELISA).
Homes with high levels of house dust mite allergen (Der f 1 + Der p 1 [greater than or equal to] 10 [micro]g/g dust by enzyme-linked immunosorbent assay) in the bed, bedroom carpet, and/or upholstered furniture were enrolled in the study.
In the test, the enzyme-linked immunosorbent assay (ELISA), antibodies to the botulism toxin are bonded to the walls of small wells in a plastic plate.
Anti-WNV immunoglobulin G (IgG) antibodies were determined by using an in-house indirect enzyme-linked immunosorbent assay (ELISA), as previously described (8).
The enzyme-linked immunosorbent assay (ELISA) test measures levels of autoantibodies to SR proteins in the patient's blood, SR proteins are involved in the processing of premessenger RNA and serve as autoantigens in some SLE patients.
In the current test, called ELISA for enzyme-linked immunosorbent assay, blood serum is placed in wells containing pieces of the AIDS virus.
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