| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
|---|---|
| MRSD | mental retardation-skeletal dysplasia [syndrome] |
| MRX | mental retardation, X-linked |
| MRXS | mental retardation, X-linked, syndrome |
| ONMRS | onychotrichodysplasia-neutropenia-mental retardation syndrome |