| 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... |
| NCI | National Cancer Institute; noncriterion ischemic [animal]; nuclear contour index; nursing care integ... |