radioactive tracer

(redirected from Radioactive labeling)
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tracer

 [trās´er]
1. a means or agent by which certain substances or structures can be identified or followed, as a radioactive tracer.
2. a mechanical device by which the outline of an object or the direction and extent of movement of a part may be graphically recorded; see also tracing.
3. a dissecting instrument for isolating vessels and nerves.
radioactive tracer a radioactive isotope replacing a stable chemical element in a compound (said to be radiolabeled) and so able to be followed or tracked through one or more reactions or systems by means of a radiation detector; used especially for such a compound that is introduced into the body for study of the compound's metabolism, distribution, and passage through the body.

radioactive tracer

a molecule containing a radioactive atom, which can be followed through a physiological system with radiation detectors.

radioactive tracer,

n a molecule to which a radioactive atom has been attached so that it can be followed through a physiologic system with radiation detectors.

radioactive

characterized by radioactivity.

radioactive decay
spontaneous decomposition of the nuclei of the atoms of radioactive substances. Measured as the proportion of the atoms in a radionuclide that decompose per unit of time, usually stated as the half-life of that particular isotope.
radioactive fallout
dissemination of radioactive substances through the atmosphere and deposition on the environment generally; causes radiation injury.
radioactive isotope
radionuclide. A radioactive nuclide, e.g. radioactive iodine or strontium.
radioactive tracer
see radioactive tracer.

tracer

a means by which something may be followed, as (1) a mechanical device by which the outline or movements of an object can be graphically recorded, or (2) a material by which the progress of a compound through the body may be observed.

radioactive tracer
a radioactive isotope replacing a stable chemical element in a compound introduced into the body, enabling its metabolism, distribution and elimination to be followed in the living animal.
References in periodicals archive ?
A husband-wife research team, using a radioactive labeling technique they pioneered, has begun mapping those changes.
This alliance is a terrific complement to our own investments in customer service, technical support, and our specialized sales force," said Dan Calvo, Senior VP of Sales at NEN, a leading provider of fluorescent, chemiluminescent and radioactive labeling and detection products for life science research, drug discovery, and genomics applications.
NEN Life Science Products is a provider of fluorescent, chemiluminescent and radioactive labeling and detection products for life science research, drug discovery, and genomics applications.

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