| Abbreviation | Definition |
|---|---|
| BPR | Binding Potential Ratio |
| BRAD | Biofeedback Research Assessment Diagnosis |
| BRAINS | Behavior Replication by Analog Instruction of the Nervous System |
| BRAN | Boulder Research and Administrative Network |
| BRD | DoD Biomedical Research Database |
| BRD1 | BRassinosteroid-Dependent 1 |
| BRD1 | BRomoDomain-containing Protein 1 |
| BRD2 | BRassinosteroid-Dependent 2 |
| BRD2 | BRomoDomain-containing Protein 2 |
| BRD3 | BRomoDomain-containing Protein 3 |
| BRD4 | BRomoDomain-containing Protein 4 |
| BRDL | Balloon Research and Development Laboratory |
| BRDS | Bioresorbable Reservoir Delivery System |
| BRDU | bromodeoxyuridine |
| BRIL | Biological Resource Imaging Laboratory |
| BRIL | Biological Resources Imaging Laboratory |
| BRL | Ballistic Research Laboratory |
| BRL | Baystate Reference Laboratories |
| BRL | Beecham Research Laboratory |
| BRL | Bioacoustics Research Laboratory |