| BEIR | biological effects of ionizing radiation |
|---|---|
| BFB | biological feedback; bronchial foreign body |
| BHL | bilateral hilar lymphadenopathy; biological half-life |
| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |
| BIBRA | British Industrial Biological Research Association |
| DP | double product |
|---|---|
| PRP | pressure rate product |
| P21 | product |
| pRB | product |