| Interferon |
Number of amino acids |
Produced by |
Induced by |
Receptors |
| IFN-αI subfamily |
166-172 |
Leucocytes |
Viral infection |
IFN-α and IFN- β share common receptors |
| IFN-αII subfamily (=IFN -ω |
166-172 |
Leucocytes |
Viral infection |
|
| IFN- β |
166 |
Fibroblasts and leucocytes |
Viral infection |
|
| IFN-γ |
143 |
T - lymphocytes |
Antigenic stimulation |
Distinct receptors |
