| INF | infant, infantile; infection, infective, infected; inferior; infirmary; infundibulum; infusion; inte... |
|---|---|
| IRF | idiopathic retroperitoneal fibrosis; impulse response function; interferon regulatory factor; intern... |
| IRU | industrial rehabilitation unit; interferon reference unit |
| ITF | interferon |
| LeIF | leukocyte interferon |