A cell-coded protein that is formed in response to infection with most animal viruses is called

Options

A. Antigen
B. Antibody
C. Interferon
D. Histone

Answer

To answer the question, "A cell-coded protein that is formed in response to infection with most animal viruses is called," we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a specific type of protein that is produced by cells in response to viral infections in animals.

2. **Analyzing the Options**:
- **Option A: Antigen**: Antigens are foreign substances that trigger an immune response. They are not proteins produced by the host cells in response to infection. Therefore, this option is incorrect.
- **Option B: Antibody**: Antibodies are proteins produced by plasma cells (a type of white blood cell) to neutralize pathogens. While they are related to the immune response, they are not the proteins produced directly by infected cells in response to a virus. Hence, this option is also incorrect.
- **Option C: Interferons**: Interferons are indeed cell-coded proteins that are produced by host cells in response to viral infections. They play a crucial role in the immune response by inhibiting viral replication and activating immune cells. This option is correct.
- **Option D: Histone**: Histones are proteins that help package DNA in cells and are not involved in the immune response to infections. Therefore, this option is incorrect.

3. **Conclusion**: After analyzing all the options, the correct answer to the question is **Interferons**. These are the cell-coded proteins formed in response to viral infections.

### Final Answer:
The cell-coded protein that is formed in response to infection with most animal viruses is called **Interferons**.

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