| IRR | insulin receptor-related receptor; intrarenal reflux |
|---|---|
| IRS-1 | insulin receptor substrate 1 |
| IRS-2 | insulin receptor substrate 2 |
| IS | ileal segment; immediate sensitivity; immune serum; immunosuppression; impingement syndrome; incenti... |
| ISI | infarct size index; initial slope index; injury severity index; Institute for Scientific Information... |