| RNA | Radionuclide angiocardiography |
|---|---|
| RNA | Renal nerve activity |
| RNA | Renal sympathetic nerve activity |
| RNAA | Radiochemical Neutron Activation Analysis |
| RNAase | Ribonuclease |
| RNAi | RNA interference |
| RNAi | RNA-mediated interference |
| RNAP | RNA polymerease |
| RNAP II | RNA polymerase II |
| RNAse | Ribonuclease |