| Li | a blood group system; labrale inferius; lithium |
|---|---|
| MBG | Marburg [disease]; mean blood glucose; morphine-benzedrine group [scale] |
| MG | Marcus Gunn [pupil]; margin; medial gastrocnemius [muscle]; membranous glomerulonephritis; menopausa... |
| MGMA | Medical Group Management Association |
| MHG | metropolitan health group |