| MMPNC | Medical Maternal Program for Nuclear Casualties |
|---|---|
| MNS | medial nuclear stratum; Melnick-Needles syndrome; moesin |
| NA | Avogadro constant or number; nalidixic acid; Narcotics Anonymous; network administrator; neuraminida... |
| N:C | nuclear-cytoplasmic ratio |
| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |