Nitrogenous base
adenine (A), guanine (G), uracil (U), and cytosine (C).
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- 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.
- NLM (National Library of Medicine)
The world’s largest medical library, the U.S. National Library of Medicine (NLM) is part of the National Institutes of Health (NIH). The NLM has as its mission to collect, organize, and make available biomedical science information to investigators, educators, and practitioners and carry out programs designed to strengthen medical library services in the United States. […]
- NMR
Nuclear magnetic resonance, an imaging technique that does not use radiation, but instead employs large magnetic forces to produce detailed images of body tissues.