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radioligand

[rā′dē-ō-lī′gənd, -lĭg′ənd]

n.

A molecule with a radionuclide tracer attached, usually used for radioimmunoassay procedures.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.