| UC | ulcerative colitis; ultracentrifugal; umbilical cord; unchanged; unclassifiable; unconscious; undiff... |
|---|---|
| UCBC | umbilical cord blood culture |
| 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... |