| PIF | paratoid isoelectric focusing variant protein; peak inspiratory flow; proinsulin-free; prolactin-inh... |
|---|---|
| SPF | skin protection factor; specific-pathogen free; spectrophotofluorometer; S-phase fraction; split pro... |
| CEF | centrifugation extractable fluid; chick embryo fibroblast; constant electric field |
| CHEF | Chinese hamster embryo fibroblast |
| CHF | chick embryo fibroblast; chronic heart failure; congenital hepatic fibrosis; congestive heart failur... |