N (continued)
- nasogastric
- nasogastric tube
- Nasonex
- nasopharyngeal cancer
- nasopharynx
- nasoscope
- nasoscopy
- National Cancer Institute
- National Center for Complementary and Alternative Medicine
- National Institutes of Health
- natural history study
- natural killer cell
- natural killer-cell large granular lymphocyte leukemia
- naturopathy
- nausea
- NB1011
- NBI-3001
- NCCAM
- NCI
- NCI clinical trials cooperative group