| OB | obese [mouse]; obese, obesity; objective benefit; obliterative bronchiolitis; obstetrics, obstetrici... |
|---|---|
| OPH | obliterative pulmonary hypertension; ophthalmia |
| BO | Bachelor of Osteopathy; base of prism out; behavior objective; belladonna and opium; body odor; bowe... |
| BOOP | bronchiolitis obliterans-organizing pneumonia |
| BRO | bronchiolitis obliterans; bronchoscopy |