| NNIS | National Nosocomial Infection Surveillance |
|---|---|
| NNL-A | N omega-nitro-L-arginine |
| NNLA | N(G)-Nitro-L-arginine |
| NNM | N'-nitrosomorpholine |
| NNN | N'-Nitrosonornicotine |
| NNN | N'-nitrosamines , N'-nitrosonornicotine |
| NNNMU | N-Nitroso N-Methylurethane |
| nNOS | Neuronal NO synthase |
| nNOS | Neuronal nitric oxide synthase |
| nNOS | neural nitric oxide synthase |