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Beta interferon is a type of protein produced by the body, specifically by fibroblasts, as a defense against viruses. Interferons, in general, interfere with viral replication. Beta interferon is one of three main types of interferons, alongside alpha and gamma interferons.123

While interferons are crucial for antiviral responses, beta interferon is particularly noted for its therapeutic use in treating the relapsing-remitting form of multiple sclerosis. It works by increasing the resistance of cells to viral infections and modulating immune responses. Interferons were discovered in 1957 and have since been explored for various medical applications, though they can have side effects.4253

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