| MSA | Muscle-specific actin |
|---|---|
| MSA | mouse serum albumin |
| MSA1 | Merozoite surface antigen 1 |
| MSA2 | Merzoite Surface Antigen 2 |
| MSAF | Meconium Stained Amniotic Fluid |
| MSAFP | Maternal Serum Alpha Feto Protein |
| MSAP | Mean systemic arterial pressure |
| MSAS | Memorial Symptom Assessment Scale |