Term: enzyme-linked-immunosorbent serologic assay: an assay that relies on an enzymatic conversion reaction and is used to detect the presence of specific substances (such as enzymes or viruses or antibodies or bacteria)
Broader: assay: a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. | Unrelated: brittle maidenhair: tropical American fern with broad pinnae; widely cultivated