| BAO-MAO | basal acid output to maximal acid output [ratio] |
|---|---|
| b/c | benefit/cost [ratio] |
| B/F | black female; bound/free [antigen ratio] |
| BH/VH | body hematocrit-venous hematocrit [ratio] |
| BRR | Bannayan-Riley-Ruvalcaba [syndrome]; baroreceptor reflex response; breathing reserve ratio |