| EIC | elastase inhibition capacity; enzyme inhibition complex |
|---|---|
| FCA | ferritin-conjugated antibodies; Freund's complete adjuvant; functional capacity assessment |
| FEC | forced expiratory capacity; free erythrocyte coproporphyrin; freestanding emergency center; Friend e... |
| FEF50 | forced expiratory flow at 50% of forced vital capacity |
| FEF50/FIF50 | ratio of expiratory flow to inspiratory flow at 50% of forced vital capacity |