Which WBC is associated with resistance of infection and allergic reactions ?

Options

A. Eosinophils
B. Monocytes
C. Neutrophils
D. Lymphocyte

Answer

To answer the question regarding which white blood cell (WBC) is associated with resistance to infection and allergic reactions, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of White Blood Cells**:
- There are five main types of white blood cells: eosinophils, neutrophils, basophils, monocytes, and lymphocytes.

2. **Understand the Functions of Each WBC**:
- **Eosinophils**: These cells are primarily involved in combating parasitic infections and play a significant role in allergic reactions.
- **Neutrophils**: These are the most abundant type of WBC and are primarily involved in fighting bacterial infections.
- **Basophils**: These cells are involved in inflammatory responses and allergic reactions but are less common.
- **Monocytes**: These cells differentiate into macrophages and dendritic cells and are involved in phagocytosis and immune response.
- **Lymphocytes**: These cells are crucial for the adaptive immune response, including T cells and B cells.

3. **Focus on the Question**:
- The question specifically asks for the WBC associated with resistance to infection and allergic reactions.

4. **Analyze the Options**:
- Among the options provided (eosinophils, monocytes, neutrophils, lymphocytes), eosinophils are known for their role in allergic reactions and defense against parasitic infections.

5. **Conclude the Answer**:
- Therefore, the white blood cell associated with resistance to infection and allergic reactions is **eosinophils**.

### Final Answer:
**Eosinophils**

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