| MRL | medical records librarian; Medical Research Laboratory |
|---|---|
| MSC | marrow stromal cell; Medical Service Corps; Medical Staff Corps |
| MSTP | Medical Scientist Training Program [of NIH]; medical student training program |
| MT | magnetization transfer; malaria therapy; malignant teratoma; mammary tumor; mammilothalamic tract; m... |
| MTA | malignant teratoma, anaplastic; medical technical assistant; medical technology assessment; metatars... |