| NABT | Natl. Assoc. Of Biology Teachers | - | Medical |
| NACHGR | Natl. Advisory Council For Human Genome Res. | - | Medical |
| NAPBC | Natl. Action Plan On Breast Cancer | - | Medical |
| NAS | Natl. Academy Of Sciences | - | Medical |
| NASA | Natl. Aeronautics And Space Administration | - | Medical |
| NBAC | Natl. Bioethics Advisory Commission | - | Medical |
| NCGR | National Center For Genome Resources | - | Medical |
| NCI | Natl. Cancer Institute | - | Medical |
| NCSA | National Center For Supercomputing Applications | - | Medical |
| NCSL | National Conference Of State Legislatures | - | Medical |
| NCSU | North Carolina State University | - | Medical |
| NEH | National Endowment For The Humanities | - | Medical |
| NFCR | National Foundation For Cancer Research | - | Medical |
| NFID | National Foundation For Infectious Diseases | - | Medical |
| NHGRI | Natl. Human Genome Res. Inst. | - | Medical |
| NICHD | National Institute Of Child Health And Human Development | - | Medical |
| NIGMS | National Institute Of General Medical Sciences | - | Medical |
| NIGMS | Natl. Institute Of General Medical Sciences | - | Medical |
| NIH | National Institutes Of Health | - | Medical |
| NIST | Natl. Inst. Of Standards And Technology | - | Medical |
| NLGLP | National Laboratory Gene Library Project | - | Medical |
| NLM | National Library Of Medicine | - | Medical |
| NMHCC | National Managed Health Care Congress | - | Medical |
| NMR | Nuclear Magnetic Resonance | - | Medical |
| NORD | National Organization For Rare Disorders | - | Medical |
| NRC | National Research Council | - | Medical |
| NRSA | National Research Service Award | - | Medical |
| NSF | Natl. Sci. Foundation | - | Medical |
| NSGC | National Society Of Genetic Counselors | - | Medical |
| NSTA | National Science Teachers Association | - | Medical |
| NYAS | New York Academy Of Science | - | Medical |
