| EF | ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; e... |
|---|---|
| HEF | hamster embryo fibroblast; human embryo fibroblast |
| ERF | Education and Research Foundation; external rotation in flexion; Eye Research Foundation |
| ICR | [distance between] iliac crests; Institute for Cancer Research; Institute for Cancer Research [mouse... |
| ISR | information storage and retrieval; Institute for Sex Research; Institute of Surgical Research; insul... |