| PN | papillary necrosis; parenteral nutrition; penicillin; perceived noise; percussion note; periarteriti... |
|---|---|
| TPN | thalamic projection neuron; total parenteral nutrition; transition protein; triphosphopyridine nucle... |
| TPNH | reduced triphosphopyridine nucleotide |
| APRT | Adenine Phospho-Ribosyl-Transferase |
| FAD | Flavin Adenine Dinucleotide |