| NPPH | nucleotide pyrophosphohydrolase |
|---|---|
| NT | nasotracheal; neotetrazolium; neurotensin; neurotrophic; neutralization test; nicotine tartrate; non... |
| nt | nucleotide |
| PN | papillary necrosis; parenteral nutrition; penicillin; perceived noise; percussion note; periarteriti... |
| TAN | total adenine nucleotide; total ammonia nitrogen |