| rh-tPA | recombinant tissue plasminogen activator |
|---|---|
| rHuEpo | recombinant human erythropoietin |
| rHuTNF | recombinant human tumor-necrosing factor |
| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
| RIBA | recombinant immunoblot assay |