| MECG | mixed essential cryoglobulinemia |
|---|---|
| MFO | medium frequency oscillator; mixed function oxidase |
| MHA | major histocompatibility antigen; May-Hegglin anomaly; Mental Health Association; methemalbumin; mic... |
| MHT | mixed hemagglutination test |
| MIF | macrophage inhibitory factor; melanocyte[-stimulating hormone]-inhibiting factor; maximum inspirator... |