| ILS | idiopathic leucine sensitivity; idiopathic lymphadenopathy syndrome; increase in life span; infrared... |
|---|---|
| IS | ileal segment; immediate sensitivity; immune serum; immunosuppression; impingement syndrome; incenti... |
| 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 |