| NERHL | Northeastern Radiological Health Laboratory |
|---|---|
| NRDL | Naval Radiological Defense Laboratory |
| RCC | radiological control center; rape crisis center; ratio of cost to charges; receptor-chemoeffector co... |
| REAT | radiological emergency assistance team |
| RH | radiant heat; radiation hybrid; radiological health; reactive hyperemia; recurrent herpes; regulator... |
| S.I.O.P. | Society of Paediatric Oncology |
|---|---|
| SIOP | Society of Pediatric Oncology |
| STS | Society of Thoracic Surgeons |