How can interferons inhibit viral replication?

Answer 1

Interferons help activate immune and other cells when a pathogen is sensed, and these other cells will destroy or contain the pathogen.

Interferons are signaling proteins that are released when pathogens are detected in the bloodstream. They then trigger the protective mechanisms of immune cells and promote the release of antigens. For example, a type 1 interferon will activate molecules than prevent the correct production of viral DNA. This will render the virus harmless because it can no longer replicate and spread.

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Answer 2

William Albracht

By inducing the production of proteins that interfere with the production of viral RNA inside infected cells, by increasing the expression of major histocompatibility complex (MHC) molecules, and by activating natural killer cells and macrophages to destroy infected cells, interferons inhibit viral replication through multiple mechanisms.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.