| NTRC | National Toxins Research Center |
|---|---|
| BNIST | National Bureau of Scientific Information [Fr. Bureau National d'Information Scientifique] |
| NAC | N-acetylcysteine; National Asthma Center; National Audiovisual Center; Noise Advisory Council |
| NAF | nafcillin; National Amputation Foundation; National Ataxia Foundation; net acid flux |
| NAPH | naphthyl; National Association of Public Hospitals; National Asthma Education Program; nicotinamide ... |