The substance produced by a cell in viral infection that can protect other cells from further infection is

Options

A. serotonin
B. colostrum
C. interferon
D. histamine

Answer

To solve the question regarding the substance produced by a cell during a viral infection that can protect other cells from further infection, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific substance produced by cells during a viral infection that has a protective role for other cells.

2. **Evaluate the Options**:
- **Option A: Serotonin**: This is a neurotransmitter that stabilizes mood and feelings of well-being. It is not involved in viral infection protection.
- **Option B: Colostrum**: This is the first form of milk produced by mammals after giving birth. It provides nutrients and antibodies to newborns but is not directly involved in protecting cells from viral infections.
- **Option C: Histamine**: This compound is involved in local immune responses and regulating physiological functions but does not specifically protect cells from viral infections.
- **Option D: Interferon**: This is a protein produced by cells in response to viral infections. Interferons have a crucial role in the immune response by signaling neighboring cells to enhance their antiviral defenses.

3. **Identify the Correct Answer**: Based on the evaluation, the substance that is produced by a cell in response to viral infection and protects other cells from further infection is **Interferon**.

### Final Answer:
The substance produced by a cell in viral infection that can protect other cells from further infection is **Interferon**.

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