| GUS | genitourinary sphincter; genitourinary system |
|---|---|
| IAS | immunosuppressive acidic substance; infant apnea syndrome; insulin autoimmune syndrome; interatrial ... |
| ICS | ileocecal sphincter; immotile cilia syndrome; impulse-conducting system; integrated case study; inte... |
| LES | Lambert-Eaton syndrome; Lawrence Experimental Station [agar]; local excitatory state; Locke egg seru... |
| LESP | lower esophageal sphincter pressure |