| NOS | nitric oxide synthesis |
|---|---|
| NOS | NO synthase |
| NOS | Nitric oxide synthetase |
| nos | Nopaline synthase |
| NOS | Not Otherwise Specified |
| NOS 2 | NO synthase |
| NOS II | Nitric oxide synthase II |
| NOS-1 | Nitric oxide synthase-1 |
| NOS-2 | NOS |
| NOS-3 | nitric oxide synthase |
| n-NOS | Neuronal NOS |
|---|---|
| eNOS | Endothelial NOS |
| PDD-NOS | Pervasive Developmental Disorder Not Otherwise Specified |
| BNOS | brain NOS |
| ecNOS | endothelial constitutive NOS |