| ECBO | enteric cytopathogenic bovine orphan [virus] |
|---|---|
| ECCO | enteric cytopathogenic cat orphan [virus] |
| ECDO | enteric cytopathic dog orphan [virus] |
| ECEO | enteric cytopathogenic equine orphan [virus] |
| ECHO | echocardiography; enteric cytopathic human orphan [virus]; Etoposide, cyclophosphamide, Adriamycin, ... |