| NRI | nerve root involvement; nerve root irritation; nonrespiratory infection |
|---|---|
| PN | papillary necrosis; parenteral nutrition; penicillin; perceived noise; percussion note; periarteriti... |
| 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... |