| Abbreviation | Definition |
|---|---|
| NADPH | Nicotinamide Adenine Dinucleotide Phosphate Hydrogen |
| NAG | N Acetyl Glucosamine |
| NAP | Neutrophil Alkaline Phosphatase |
| NAPBC | National Action Plan on Breast Cancer |
| NAS | National Academy of Sciences |
| NAT | Nucleic Acid Test |
| NAT | Nucleic Acid Testing |
| NBAC | National Bioethics Advisory Commission |
| NBAGR | National Bureau of Animal Genetic Resources |
| NBD | Nucleotide Binding Domain |
| NBDL | National Biodiversity DNA Library |
| NC2 | Negative Cofactor 2 |
| NCBI | National Center for Biotechnology Information |
| NCGR | National Center for Genome Resources |
| NCI | National Cancer Institute |
| NCPI | Neutral Cysteine Proteinase Inhibitor |
| NCPR | NADPH-Cytochrome P450 Reductase |
| NCSA | National Center for Supercomputing Applications |
| NCSL | National Conference of State Legislatures |
| NDIS | National DNA Index System |