| FAR | Federal acquisitions regulation; fractional albumin rate; fresh bone marrow |
|---|---|
| FR | failure rate; film-screen radiograph; fasciculus retroflexus; febrile reaction; feedback regulation;... |
| IRIS | integrated risk information system; interleukin regulation of immune system; International Research ... |
| CTV | cervical and thoracic vertebrae; clinical target volume |
| DOTC | Dameshek's oval target cell |