- maximum inspiratory pressure test
- maximum tolerated dose
- Mayo Clinic regimen
- maytansinoid DM4-conjugated humanized monoclonal antibody huC242
- MBL
- MC1R
- MC5-A scrambler therapy
- MDL 101,731
- MDX-010
- MDX-060
- mean
- mean survival time
- measles virus
- measurable disease
- MEDI-507
- MEDI-522
- medial supraclavicular lymph node
- median
- median survival time
- median umbilical ligament
- mediastinal pleura
- mediastinoscope
- mediastinoscopy
- mediastinum
- Medicaid