| er | endoplasmic reticulum |
|---|---|
| GER | gastroesophageal reflux; geriatrics; granular endoplasmic reticulum |
| GERL | Golgi-associated endoplasmic reticulum lysosome |
| RER | renal excretion rate; respiratory exchange ratio; rough endoplasmic reticulum |
| sER | smooth endoplasmic reticulum |