Final answer:
Interferons are proteins produced by virus-infected cells. They serve to warn neighboring uninfected cells about the presence of a virus, activating immune action and production of compounds to inhibit viral replication.
Step-by-step explanation:
Yes, your statement is correct. Interferons are indeed proteins that play a significant role in protecting cells from viral invasion. They are a subclass of proteins known as cytokines, and are produced by cells that have already been infected by viruses. In response to the presence of a virus, these infected cells release interferons which act as a warning signal to neighboring uninfected cells. By virtue of this signal, two actions take place: Interferons stimulate uninfected cells to produce compounds that interfere with viral replication, making these cells resistant to the viral infection. They also activate immune cells to respond more effectively against the virus. So, interferons play a key role in the immune system, defending the body against viral infection.
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