| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record; minimal angle resolution; mixed antiglobulin reaction |
|---|---|
| mar | margin; marker [chromosome] |
| mar(X) | marker X [chromosome] |
| MARC | machine-readable cataloging; multifocal and recurrent choroidopathy |
| MARCKS | myristoylated alanine-rich protein C kinase substrate |
| MARS | magnetic anchor retinal stimulation; methionyl-transfer ribonucleic acid synthetase; mouse antirat serum |
| MARSA | methicillin-aminoglycoside-resistant Staphylococcus aureus |
| MART | multiplicative algebraic reconstruction technique |