| N/50 | fiftieth-normal [solution] |
|---|---|
| NAD | neutrophil actin dysfunction; new antigenic determinant; nicotinamide adenine dinucleotide; nicotini... |
| NBME | National Board of Medical Examiners; normal bone marrow extract |
| NBT | nitroblue tetrazolium; non-tumor-bearing; normal breast tissue |
| NBTNF | newborn, term, normal, female |