| NKTR | natural killer triggering receptor |
|---|---|
| NS | natural science; Neosporin; nephrosclerosis; nephrotic syndrome; nervous system; neurological surger... |
| NTA | natural thymocytotoxic autoantibody; nitrilotriacetic acid; Nurse Training Act |
| CO | carbon monoxide; cardiac output; castor oil; casualty officer; centric occlusion; cervical orthosis;... |
| EPO | eosinophil peroxidase; erythropoiesis; erythropoietin; evening primrose-oil; exclusive provider orga... |