Viral infected cells secrete:

Options

A. Prions
B. Lymph
C. Interferons
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding Viral Infection**: When a virus infects a cell, it hijacks the cell's machinery to replicate itself. This process can lead to the destruction of the infected cell.

2. **Response of Infected Cells**: In response to viral infection, the infected cells produce signaling proteins known as interferons. These proteins play a crucial role in the immune response.

3. **Function of Interferons**: Interferons serve to protect neighboring uninfected cells from becoming infected by the virus. They do this by inducing an antiviral state in these surrounding cells, which helps to inhibit viral replication.

4. **Identifying the Correct Answer**: The question asks what is secreted by viral infected cells. Based on our understanding, the correct answer is "Interferons."

5. **Eliminating Incorrect Options**:
- **Option 1: Prions** - These are infectious proteins that cause neurodegenerative diseases, not secreted by viral infected cells.
- **Option 2: Lymph** - This is a fluid that carries white blood cells, not a secretion from infected cells.
- **Option 4: All of the above** - Since options 1 and 2 are incorrect, this option is also incorrect.

6. **Conclusion**: Therefore, the correct answer to the question "Viral infected cells secrete:" is **Interferons**.

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