NBN (newborn)

NBRT (National Board for Respiratory Therapy)

NBS (Nijmegen breakage syndrome)

NBT (nitro blue tetrazolium)

NBTNF/M (newborn, term, normal, female/male)

NC (nasal cannula)

NCAT (normocephalic, atraumatic)

NCCN (National Comprehensive Cancer Network)

NCHS (National Center for Health Statistics)

NCI (National Cancer Institute)