| EC50 | median effective concentration |
|---|---|
| ECBV | effective circulating blood volume |
| ECF | effective capillary flow; eosinophilic chemotactic factor; erythroid colony formation; extended care... |
| ED | early-decision [applicant]; early differentiation; ectodermal dysplasia; ectopic depolarization; eff... |
| ED50 | median effective dose |