| EC | effective concentration; ejection click; electrochemical; electron capture; embryonal carcinoma; eme... |
|---|---|
| ECAO | enteric cytopathogenic avian orphan [virus] |
| ECBO | enteric cytopathogenic bovine orphan [virus] |
| ECCO | enteric cytopathogenic cat orphan [virus] |
| ECDO | enteric cytopathic dog orphan [virus] |