Medical Dictionary
enzyme-linked immunosorbent assay (ELISA)
- an in vitro binding assay in which an enzyme and its substrate (rather than a radioactive substance) serve as the indicator system; in positive test results, the two yield a colored or other easily recognizable substance; tests are made in wells in polystyrene or other material to which immunoglobulins or antigenic preparations readily adsorb; the enzyme is linked to known immunoglobulin (or antigen) and in positive test results remains in the well as part of the antigen-antibody complex available to react with its substrate when added.
WebMD Medical Reference from "Stedman's Medical Dictionary"
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Stedman’s Medical Dictionary 28th Edition, Copyright© 2006_Lippincott Williams & Wilkins. All rights reserved.
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