Source:http://linkedlifedata.com/resource/umls/id/C0439285
NCI: A unit of concentration (molarity unit) equal to one quadrillionth of a mole (10E-15 mole) of solute in one liter of solution.,NCI: A unit of concentration (molarity unit) equal to one quadrillionth of a mole (10E-15 mole) of solute in one liter of solution. (NCI)