Source:http://linkedlifedata.com/resource/umls/id/C0034629
MSH: A naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222. It is a member of the noble gas family found in soil, and is released during the decay of radium.,CSP: naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222; a member of the noble gas family, released during the decay of radium and found in soil; there is a link between exposure to radon and lung cancer.,NCI: A radioactive gas that is released by uranium, a substance found in soil and rock. Breathing in too much radon can damage lung cells and lead to lung cancer.,MEDLINEPLUS: <p>You can't see radon. And you can't smell it or taste it. But it may be a problem in your home. Radon comes from the natural breakdown of uranium in soil, rock and water. Radon is the second leading cause of <a href='http://www.nlm.nih.gov/medlineplus/lungcancer.html'>lung cancer</a> in the United States. </p><p>There are low levels of radon outdoors. Indoors, there can be high levels. Radon can e