| BRA | bilateral renal agenesis; bone-resorbing activity; brain-reactive antibody |
|---|---|
| BS | Bachelor of Science; Bachelor of Surgery; Bacillus subtilis; Bartter syndrome; base strap; bedside; ... |
| BTL | bilateral tubal ligation |
| BUDS | bilateral upper dorsal sympathectomy |
| BUR | bilateral ureteral occlusion |