assay synonyms, assay pronunciation, assay translation, English dictionary definition of assay. ELISA is the basic assay technique, known as enzyme-linked immunosorbent assay (also referred to as EIA: Enzyme Immunoassay) that is carried out to detect and measure antibodies, hormones, peptides and proteins in the blood. Transfection is employed in a variety of research fields. of an ore or drug: His find required an assay … translation and definition "serological assay", Dictionary English-English online. Example sentences with "serological assay", translation memory. An assay is a breakdown of a material, examining the individual parts that make up the whole. Pull-down assays are useful for both confirming the existence of a protein-protein interaction predicted by other research techniques (e.g., co-immunoprecipitation) and as an initial screening assay for identifying previously unknown protein-protein interactions. See more. ELISPOT (enzyme-linked immunospot assay) refers to ELISA-like capture and measurement of proteins secreted by cells that are plated in PVDF-membrane-backed microplate wells. an analysis of a substance, esp. It is a "sandwich" assay in which the proteins are captured locally as they are secreted by the plated cells, and detection is with a precipitating substrate. Apoptosis is a normal genetically programmed cell death where an aging cell at the end of its life cycle shrinks and its remaining fragments are phagocytosed without any inflammatory reaction. end-point assay: (in biomolecular screening) Kinetic assay run for ... although purists reserve the former for screening of compound libraries and the latter for more generalized cell biology experiments. The way an assay is carried out (the method of testing to determine the purity of enzymes) will influence the reported activity values. Phenotypic screening of compounds in a multicellular humanized environment provides richer data for faster translation into the clinic. The pull-down assay is an in vitro method used to determine a physical interaction between two or more proteins. serological assay. Transfection, technique used to insert foreign nucleic acid (DNA or RNA) into a cell, typically with the intention of altering cellular properties. Diagnosis requires virologic methods based on PCR or serologic assays using the E2 antibody. Bioassay definition, determination of the biological activity or potency of a substance, as a vitamin or hormone, by testing its effect on the growth of an organism. Giga-fren. Define assay. Immunoassay definition is - a technique or test used to detect the presence or quantity of a substance (such as a protein) based on its capacity to act as an antigen. 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