isotopic tracer(redirected from Isotopic labeling)
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Related to Isotopic labeling: radiolabeled
Etymology: Gk, isos + topos, place; Fr, tracer, to track
an isotope or mixture of isotopes of an element incorporated into a sample to permit observation of the course of the element through a chemical, physical, or biological process. The observations may be made by measuring the radioactivity or the abundance of the isotope.