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Major features of IFN family components.
| IFN type | Name (no. of genes) | Location in human chromosomes | Receptors |
|---|---|---|---|
| Type I | IFNα (14) IFNβ (1) IFNκ (1) IFNω (1) IFNɛ (1) |
Chromosome 9 | IFNαR1 and IFNαR2 (also known as IFNAR1 and IFNAR2) |
| Type II | IFNγ (1) | Chromosome 12 | IFNγR1 and IFNγR2 (also known as IFNGR1 and IFNGR2) |
| Type III | IFNλ (3) | Chromosome 19 | IFNλR1 (also known as IL-28RA) and IL-10R2 |
