Nissl's granules are present in

Options

A. nerve cells
B. mast cells
C. bone cells
D. cartilage cells

Explanation

**Step-by-Step Solution:**

1. **Understanding Nissl's Granules**: Nissl's granules are structures found within certain types of cells. They are primarily associated with the synthesis of proteins.

2. **Identifying the Cell Types**: The question provides four options:
- Nerve cells
- Mast cells
- Bone cells
- Cartilage cells

3. **Analyzing Each Option**:
- **Nerve Cells**: Also known as neurons, these cells are responsible for conducting nerve impulses. They contain Nissl's granules, which are essential for protein synthesis.
- **Mast Cells**: These cells are involved in allergic responses and do not contain Nissl's granules.
- **Bone Cells**: These cells are responsible for the formation of bone and do not have Nissl's granules.
- **Cartilage Cells**: These cells are involved in the formation of cartilage, which is a type of connective tissue, and they also do not contain Nissl's granules.

4. **Conclusion**: Based on the analysis, Nissl's granules are specifically found in nerve cells (neurons).

5. **Final Answer**: Therefore, the correct answer to the question "Nissl's granules are present in" is **nerve cells**.

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