| LTF | lactotransferrin; lipotropic factor; lymphocyte-transforming factor |
|---|---|
| MAF | macrophage activation factor; macrophage agglutinating factor; maximum atrial fragmentation; minimum... |
| OAF | open air factor; osteoclast activating factor |
| OGF | ovarian growth factor; oxygen gain factor |
| OSF | organ system failure; osteoclast-stimulating factor; outer spiral fiber; overgrowth stimulating fact... |