tagged molecule

tagged molecule

[′tagd ′mäl·ə‚kyül]
(chemistry)
A molecule having one or more atoms which are either radioactive or have a mass which differs from that of the atoms which normally make up the molecule.
References in periodicals archive ?
Blinking has been a problem for researchers, because it breaks up the trajectory of a moving particle or tagged molecule that they are trying to follow.
But because the particles glow continuously, researchers can use them to track tagged molecules continuously.
Lynn, surveyed tissue using tagged molecules known to link with these receptors.
As urine flows through the cylinder, any cocaine molecules in the sample will kick their fluorescent counterparts off the the antibodies, and these tagged molecules will register a positive result as they exit past a fluorimeter.