| MGA | medical gas analyzer; melengestrol acetate; 3-methylglutaconicaciduria |
|---|---|
| MgATP | magnesium adenosine triphosphate |
| MGB | medial geniculate body; myoglobin |
| MGBG | methylglyoxal-bis-(guanylhydrazone) |
| MGC | megacolon; minimal glomerular change |
| MgC | magnocellular neuroendocrine cell |
| MGCE | multifocal giant cell encephalitis |
| MGCN | megalocornea |
| MGCR | meningioma chromosome region |
| MGCRB | Medicare Geographic Classification Review Board |