| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
|---|---|
| RID | radial immunodiffusion; remission-inducing drug; ruptured intervertebral disc |
| Rm | relative mobility; remission |
| rm | remission; room |
| SBP | Spontaneous Bacterial Peritonitis |