Interferons are proteins that:

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(A) Interferons $(IFNs)$ are a type of cytokine barrier in innate immunity. When a cell is infected by a virus,it secretes proteins called interferons

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Protect non-infected cells from viral infection.

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(A) Interferons $(IFNs)$ are a type of cytokine barrier in innate immunity. When a cell is infected by a virus,it secretes proteins called interferons. These interferons do not kill the virus directly,nor do they kill the infected cell. Instead,they act on nearby non-infected cells and make them resistant to further viral infection by inducing the production of antiviral proteins. Therefore,the correct statement is that they protect non-infected cells from viral infection.

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