Source:http://linkedlifedata.com/resource/umls/id/C0560007
NCI: A unit of radioactivity equal to one billionth of a curie or 37 becquerels, and corresponding to radioactivity of 37 atomic disintegrations per second.,NCI: A unit of radioactivity equal to one billionth of Curie or 37 Becquerels, and corresponding to a radioactivity of 37 atomic disintegrations per second.(NCI)