| NTD | neural tube defect; nitroblue tetrazolium dye; noise tone difference; 5'-nucleotidase |
|---|---|
| ASD | aldosterone secretion defect; Alzheimer senile dementia; antisiphon device; arthritis syphilitica de... |
| IASD | interatrial septal defect; inter-auricular septal defect |
| SD | Sandhoff disease; senile dementia; septal defect; serologically defined; serologically detectable; s... |
| L-tube | Levin tube |