| R- | radical |
|---|---|
| R----L | right to left |
| R-CMAS | Revised Children's Manifest Anxiety Scale |
| R-DNA | recombinant DNA |
| R-EAE | Relapsing experimental autoimmune encephalomyelitis |
| R-EPO | Recombinant erythropoietin |
| r-FSH | recombinant follicle stimulating hormone |
| r-FVIII | recombinant FVIII |
| R-G | red-green |
| r-gp160 | recombinant gp160 |