| radioli | Sing. Radiolus . [NL, dim. Of L. Radius radius: cf. L. Radiolus a feeble sunbeam. <zoology> The barbs of the radii of a feather; barbules. Source: Websters Dictionary (01 Mar 1998) |
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| radioligand | <radiobiology> A small molecule with a radionuclide tracer attached, that binds to a specific large molecule. It is usually used for radioimmunoassay procedures. Origin: radio-+ L. Ligandus, that which is to be bound, fr. Ligo, to bind (20 Sep 2002) |
| radioligand assay | <radiobiology> Quantitative determination of receptor (binding) proteins in body fluids or tissue using radioactively labelled binding reagents (e.g., antibodies, intracellular receptors, plasma binders). (12 Dec 1998) |
| radiolite | <paleontology> A hippurite. Origin: L. Radius ray: cf. F. Radiolithe. Source: Websters Dictionary (01 Mar 1998) |