Interferon is a type of protein that is produced by the cells of the immune system in response to viral infections, certain cancers, and other diseases. It plays a critical role in the body's defense against viruses by inhibiting viral replication within infected cells and activating immune cells to attack infected cells. Interferon also has anti-inflammatory effects and helps regulate the immune response. It can be produced naturally by the body or administered as a medication for certain medical conditions.
