| CIF | cloning inhibitory factor |
|---|---|
| CLIF | cloning inhibitory factor; Crithidia luciliae immunofluorescence |
| CFU-S, | CFUS colony-forming unit, spleen; colony-forming unit, stem cells |
| LAK T cells | Lymphokine Activated Killer T cells |
| SRC | sedimented red cells; sheep red cells |