| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
|---|---|
| MSS | Marshall-Smith syndrome; massage; Medical Superintendents' Society; Medicare Statistical System; men... |
| SC | conditioned stimulus; sacrococcygeal; Sanitary Corps; scalenus [muscle]; scapula; Schwann cell; scia... |
| SD | Sandhoff disease; senile dementia; septal defect; serologically defined; serologically detectable; s... |
| SMSA | standard metropolitan statistical area |