| IOR | index of response |
|---|---|
| IPPR | integrated pancreatic polypeptide response; intermittent positive-pressure respiration |
| Ir | immune response [gene]; iridium |
| IRF | idiopathic retroperitoneal fibrosis; impulse response function; interferon regulatory factor; intern... |
| LAR | laryngology; late asthmatic response; late reaction; left arm recumbent; leukocyte antigen-related |