| ARCI | Addiction Research Center Inventory |
|---|---|
| ARF | acute renal failure; acute respiratory failure; acute rheumatic fever; Addiction Research Foundation... |
| ARL | Association of Research Libraries; average remaining lifetime |
| ARNMD | Association for Research in Nervous and Mental Diseases |
| ARO | Associate for Research in Ophthalmology |
| RDC | Research Diagnostic Criteria |
|---|---|
| R&D | Research and Development |
| VDRL | Veneral Disease Research Laboratory |