| Bact, bact | Bacterium; bacterium, bacteria |
|---|---|
| RER | Rough Endoplasmic Reticulum |
| RER | renal excretion rate; respiratory exchange ratio; rough endoplasmic reticulum |
| RNA | radionuclide angiography; Registered Nurse Anesthetist; ribonucleic acid; rough, noncapsulated, avir... |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |