| Abbreviations | Meaning |
 | LSR | Lanthanide Shift Reagent; Lecithin/ Sphingomyelin Ratio; Left Superior Rectus [muscle]; Liver/spleen Ratio |
| PKM | Protein Kinase M; Pyruvate Kinase, Muscle |
| SMA | Smooth Muscle Antibody |
| TRAM | Transverse Rectus Abdominis Muscle |
| SITS | Supraspinatus, Infraspinatus, Teres Minor, Subscapularis [shoulder Muscles Comprising The Rotator Cuff] |
| LMR | Left Medial Rectus [muscle]; Localized Magnetic Resonance; Longitudinal Medical Record; Lymphocytic Meningopolyradiculitis |
| EMPS | Exertional Muscle Pain Syndrome |
| RMS | Respiratory Muscle Strength |
| CKMM | Creatine Kinase, Muscle Type |
| IM | Inspiratory Muscles |
| HAODM | Hypoplasia Anguli Oris Depressor Muscle |
| SMC | Scientific Manpower Commission; Smooth Muscle Cell; Somatomedin C; Succinylmonocholine; Supernumerary Marker Chromosome; Suture-mediated Closure |
| CM | Circular Muscle |
| MRO | Master Reference Oscillator; Medical Review Officer; Minimal Recognizable Odor; Muscle Receptor Organ |
| LLR | Left Lateral Rectus [muscle] |
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