| r-HuEPO | Human recombinant erythropoietin |
|---|---|
| r-HuEPO | Recombinant Human Erythropoietin |
| R-I | regulatory subunit |
| r-IFN | Recombinant interferon |
| r-IFN-gamma | Recombinant gamma interferon |
| r-IL 2 | Recombinant IL 2 |
| r-IL-2 | Recombinant human interleukin 2 |
| R-L | right-left |
| R-LC | Regulatory light chain |
| R-M | Restriction and modification |