Natural killer cells are type of-

Options

A. Monocytes
B. Lymphocytes
C. Neutrophils
D. Phagocytes

Answer

**Step-by-Step Solution:**

1. **Understanding Natural Killer Cells**: Natural killer (NK) cells are a type of immune cell that plays a crucial role in the body's defense against tumors and virally infected cells.

2. **Identifying the Classification**: NK cells are classified as a type of lymphocyte. Lymphocytes are a category of white blood cells (leukocytes) that are essential for the immune system.

3. **Differentiating Types of White Blood Cells**:
- **Monocytes**: These are larger white blood cells that differentiate into macrophages and dendritic cells.
- **Neutrophils**: These are the most abundant type of white blood cells and are primarily involved in the response to infections.
- **Phagocytes**: This term refers to cells that can engulf and digest pathogens and debris, which includes macrophages and neutrophils.

4. **Conclusion**: Since natural killer cells are specifically classified under lymphocytes, the correct answer to the question is "lymphocytes."

**Final Answer**: Natural killer cells are a type of lymphocytes.

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