| NNG | nonspecific nonerosive gastritis |
|---|---|
| NS | natural science; Neosporin; nephrosclerosis; nephrotic syndrome; nervous system; neurological surger... |
| ns | nanosecond; nonspecific; no sequelae; no specimen; not significant; nylon suture |
| NSC | neurosecretory cell; no significant change; nonservice connected; nonspecific suppressor cell; norma... |
| NSE | neuron-specific enolase; nonspecific esterase; normal saline enema |