| IST | inappropriate sinus tachycardia; insulin sensitivity test; insulin shock therapy; International Soci... |
|---|---|
| LS | lateral suspensor; left sacrum; left septum; left side; legally separated; leiomyosarcoma; length of... |
| MC & S | microscopy, culture, and sensitivity |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |