| ISF | interstitial fluid |
|---|---|
| ISFV | interstitial fluid volume |
| PIF | paratoid isoelectric focusing variant protein; peak inspiratory flow; proinsulin-free; prolactin-inh... |
| AF | abnormal frequency; acid-fast; adult female; afebrile; aflatoxin; albumin-free; albumose-free; aldeh... |
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |