| CRN | complement requiring neutralization |
|---|---|
| EAC | Ehrlich ascites carcinoma; electroacupuncture; epithelioma adenoides cysticum; erythema annulare cen... |
| ECFC | eosinophilic chemotactic factor complement |
| Fabc | fragment, antigen and complement binding [of immunoglobulins] |
| Facb | fragment, antigen, and complement binding |