Source:http://linkedlifedata.com/resource/umls/id/C0028158
MSH: An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.,CSP: use this term only for the element N or the gas N2; for other nitrogen compounds see NITROGEN COMPOUND.,NCI: An element with atomic symbol N, atomic number 7, and atomic weight 14.01.,CHV: name of a chemical element (atomic number 7),CHV: name of a chemical element (atomic number 7)