| NRI | nerve root involvement; nerve root irritation; nonrespiratory infection |
|---|---|
| AOB | accessory olfactory bulb; alcohol on breath |
| LOT | lateral olfactory tract; left occipitotransverse [fetal position] |
| OB | obese [mouse]; obese, obesity; objective benefit; obliterative bronchiolitis; obstetrics, obstetrici... |
| OLB | olfactory bulb; open liver biopsy; open lung biopsy |