| IRR | insulin receptor-related receptor; intrarenal reflux |
|---|---|
| IRS | immunoreactive secretion; infrared spectrophotometry; insulin receptor species; insulin receptor sub... |
| AChRP | acetylcholine receptor protein |
| GRB | growth factor receptor-binding protein |
| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |