| HCR | heme-controlled repressor; host-cell reactivation; hysterical conversion reaction |
|---|---|
| HR | heart rate; hemorrhagic retinopathy; high resolution; higher rate; histamine receptor; hormonal resp... |
| IDR | intradermal reaction |
| IGR | immediate generalized reaction; integrated gastrin response |
| IIGR | ipsilateral instinctive grasp reaction |