| RHD | radiological health data; relative hepatic dullness; renal hypertensive disease; rheumatic heart dis... |
|---|---|
| RHR | renal hypertensive rat; resting heart rate |
| RHT | renal homotransplantation |
| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
| RL | radial line; radiation laboratory; reduction level; renal dysplasia-limb defects [syndrome]; resisti... |