| M/L | monocyte/lymphocyte [ratio] |
|---|---|
| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
| MTR | magnetization transfer ratio; Meinicke turbidity reaction; 5-methylthioribose; methyltetrahydrofolat... |
| m/z | mass-to-charge ratio |
| NAA/Cr | N-acetyl aspartate/creatine [ratio] |