| RSV | respiratory syncytial virus; right subclavian vein; Rous sarcoma virus |
|---|---|
| RT | radiologic technologist; radiotelemetry; radiotherapy; radium therapy; rapid tranquilization; reacti... |
| RTF | resistance transfer factor; respiratory tract fluid |
| RTI | respiratory tract infection; reverse transcriptase inhibition |
| RURTI | recurrent upper respiratory tract infection |