What are interferons?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Interferons**: Interferons are a group of signaling proteins that are produced and released by host cells in response to the presence of pathogens, such as viruses, bacteria, and parasites.

2. **Production of Interferons**: When a cell becomes infected by a virus, it detects the viral presence and responds by synthesizing and releasing interferons. This process is a part of the body's immune response.

3. **Function of Interferons**: The primary role of interferons is to protect non-infected cells from viral infection. They act as a warning signal to neighboring cells, prompting them to enhance their defenses against potential viral attacks.

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