IS

• ileal segment;

• iliosacral;

• immediate sensitivity;

• immune serum;

• immunostaining;

• immunosuppression;

• impingement syndrome;

• incentive spirometer;

• index of sexuality;

• infant size;

• infantile spasms;

• information services;

• information system;

• infundibular septum;

• insertion sequence;

• in situ;

• insulin secretion;

• interaction site;

• intercellular space;

• intercostal space;

• interictal spike;

• international standards;

• interstitial space;

• interventricular system;

• intracardial shunt;

• intraspinal;

• intrasplenic;

• intrastriatal;

• intraventricular septum;

• invalided from service;

• inversion sequence;

• ischemic score;

• isoproterenol