| MHA | major histocompatibility antigen; May-Hegglin anomaly; Mental Health Association; methemalbumin; mic... |
|---|---|
| MHB | maximum hospital benefit; Mueller-Hinton base |
| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
| ASM | acid sphingomyelinase; airway smooth muscle; American Society for Microbiology; anterior scalenus mu... |
| CM | California mastitis [test]; calmodulin; capreomycin; carboxymethyl; cardiac murmur; cardiac muscle; ... |