| LNS | lateral nuclear stratum; Lesch-Nyhan syndrome |
|---|---|
| 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 |