Interferon is a type of

Options

A. anti-bacterial protein
B. anti-viral protein
C. complex protein
D. anti-clotting protein

Answer

### Step-by-Step Solution:

1. **Understanding Interferon**: Interferon is a type of protein that plays a crucial role in the immune response, particularly against viral infections.

2. **Classification of Interferon**: It is important to classify interferon correctly. The options given are antibacterial protein, antiviral protein, complex protein, and anti-clotic protein.

3. **Function of Interferon**: Interferon is primarily known for its antiviral properties. It interferes with the replication of viruses within host cells, thereby preventing the spread of infection.

4. **Innate Immunity**: Interferon is part of the innate immune system, which is the body's first line of defense against pathogens. It acts quickly to inhibit viral replication.

5. **Conclusion**: Based on its function and classification, interferon is best categorized as an **antiviral protein**.

### Final Answer:
Interferon is a type of **antiviral protein**.

---