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Nitrogen

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• Nitrogen narcosis

  A condition similar to intoxication with alcohol characterized by euphoria, loss of balance and manual dexterity, disorientation, and impaired reasoning. It can occur in scuba divers below 30 meters (100 feet) who breathe compressed air, because of the high nitrogen content of air. Nitrogen narcosis is reversed as the gas pressure decreases and the diver […]

• Nitrogenous base

  adenine (A), guanine (G), uracil (U), and cytosine (C).

• Nitrosoureas

  A group of cancer drugs called alkylating agents because they act by the process of alkylation to inhibit DNA repair. The nitrosoureas can cross the blood-brain barrier and are used to treat brain tumors. The nitrosoureas include carmustine (BCNU), lomustine (CCNU) and semustine.

• Nitrous oxide (laughing gas)

  A gas that can cause general anesthesia. Nitrous oxide is sometimes given in the company of other anesthetic agents but it is not used today as the only anesthetic agent because the concentration of nitrous oxide needed to produce anesthesia is close to the concentration that seriously lowers the blood oxygen level and creates a […]

• NLD

  Necrobiosis lipoidica diabeticorum.

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