| SPA | Scintillation Proximity Assay |
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| proximity | The quality or state of being next in time, place, causation, influence, etc.; immediate nearness, either in place, blood, or alliance. "If he plead proximity of blood That empty title is with ease withstood." (Dryden) Origin: L. Proximitas: cf. F. Proximite See Proximate, and cf. Propinquity, Approach. Source: Websters Dictionary (01 Mar 1998) |
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| scintillation proximity assay | Assay system in which antibody or receptor molecule is bound to a bead that will emit light when _ emission from an isotope occurs in close proximity, i.e. From a radioactively labelled ligand. Avoids the need for scintillant in order to measure the amount of bound isotope and thus the amount of antigen or ligand present. (18 Nov 1997) |
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| proximity | the property of being close together |
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| proximity | the region close around a person or thing |
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