Source:http://linkedlifedata.com/resource/umls/id/C0018880
MSH: Helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics. (Dorland, 27th ed),CSP: noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003; a colorless, odorless, tasteless gas that is not combustible and does not support combustion; medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.,NCI: A gaseous element with atomic symbol He, atomic number 2, and atomic weight 4.00.