| NBA | neuron-binding activity |
|---|---|
| NBP | needle biopsy of prostate; neoplastic brachial plexopathy; nucleic acid binding protein |
| OABP | organic anion binding protein |
| OBP | odorant-binding protein; ova, blood, parasites [in stool] |
| OTF | octamer-binding transcription factor; oral transfer factor |