The WBC with large, spherical nucleus and scanty peripheral cytoplasm are  

Options

A. reticulocytes
B. lymphocytes
C. monocytes
D. mast cells

Answer

To solve the question regarding the type of white blood cell (WBC) characterized by a large, spherical nucleus and scanty peripheral cytoplasm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific type of WBC that has a large, spherical nucleus and scanty peripheral cytoplasm.

2. **Analyze the Options**: The options provided are:
- Reticulocytes
- Lymphocytes
- Monocytes
- Mast cells

3. **Evaluate Each Option**:
- **Reticulocytes**: These are immature red blood cells (RBCs) and not WBCs. Therefore, this option is incorrect.
- **Mast Cells**: These are involved in allergic responses and are found in tissues, not classified as WBCs in the same sense as lymphocytes or monocytes. Thus, this option is also incorrect.
- **Monocytes**: These are a type of WBC, but they typically have an oval nucleus and a more abundant cytoplasm that is grayish in color. Therefore, this option does not fit the description provided in the question.
- **Lymphocytes**: These are a type of WBC characterized by a large, spherical nucleus and scanty peripheral cytoplasm. This matches the description given in the question.

4. **Conclusion**: Based on the analysis, the correct answer is **Lymphocytes**.

### Final Answer:
The WBC with a large, spherical nucleus and scanty peripheral cytoplasm are **Lymphocytes**.

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