Phagocytes of innate immunity are

Options

A. Neutrophils
B. Macrophages
C. Monocytes
D. All the above

Answer

To answer the question "Phagocytes of innate immunity are," we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Define Innate Immunity**:
- Innate immunity is the body's first line of defense against pathogens. It is present at birth and does not require prior exposure to a pathogen to be activated.

2. **Identify Phagocytes**:
- Phagocytes are a type of immune cell that can engulf and digest pathogens and debris. They play a crucial role in the innate immune response.

3. **List the Types of Phagocytes**:
- The main types of phagocytes involved in innate immunity include:
- **Neutrophils**: These are the most abundant type of white blood cells and are often the first responders to sites of infection.
- **Macrophages**: These cells are derived from monocytes and are responsible for engulfing and digesting cellular debris and pathogens.
- **Monocytes**: These are large white blood cells that circulate in the bloodstream and can differentiate into macrophages and dendritic cells when they migrate into tissues.
- **Dendritic Cells**: These cells capture antigens and present them to T cells, but they also have phagocytic capabilities.

4. **Evaluate the Options**:
- The question provides options:
- Neutrophils
- Macrophages
- Monocytes
- All of the above
- Since all the listed cell types (neutrophils, macrophages, and monocytes) are indeed phagocytes involved in innate immunity, the correct answer is "All of the above."

5. **Conclusion**:
- Therefore, the phagocytes of innate immunity are neutrophils, macrophages, and monocytes, making the correct answer "All of the above."

### Final Answer:
**All of the above** (Neutrophils, Macrophages, Monocytes).

---