| HII | Health Industries Institute; Health Insurance Institute; hemagglutination inhibitor immunoassay |
|---|---|
| IAM | Institute of Applied Microbiology [Japan]; Institute of Aviation Medicine; internal auditory meatus |
| ICR | [distance between] iliac crests; Institute for Cancer Research; Institute for Cancer Research [mouse... |
| IRH | Institute for Research in Hypnosis; Institute of Religion and Health; intrarenal hemorrhage |
| ISR | information storage and retrieval; Institute for Sex Research; Institute of Surgical Research; insul... |