potassium-42

Medical Dictionary

potassium-42 n.
An artificially produced beta-emitting isotope of potassium having a half-life of 12.36 hours; it is used as a radioactive tracer in studies of potassium distribution in bodily fluids.

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