| HE | half-scan with extrapolation; hard exudate; hektoen enteric [agar]; hemagglutinating encephalomyelit... |
|---|---|
| AEF | allogenic effect factor; amyloid enhancing factor; aorto-enteric fistula |
| EC | effective concentration; ejection click; electrochemical; electron capture; embryonal carcinoma; eme... |
| E/C | endocystoscopy; enteric-coated; estrogen/creatinine ratio |
| ECAO | enteric cytopathogenic avian orphan [virus] |