Study note

Interferons: classification and cellular sources

THE CONTEXT
Interferons were originally identified as antiviral agents and are classified as cytokines.

Three classes of interferons

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IFN-a is produced by leucocytes.
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IFN-b is produced by fibroblasts.
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IFN-g is produced by T cells activated by antigens, mitogens or exposure to IL-2.
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