Name the tissues where the following structures occur :
Nissl's granules

Explanation

To answer the question regarding the tissues where Nissl's granules occur, follow these steps:

### Step-by-Step Solution:

1. **Understanding Nissl's Granules**:
- Nissl's granules are structures found in the cell body of neurons. They are primarily composed of rough endoplasmic reticulum (RER) and ribosomes, which are involved in protein synthesis.

2. **Identifying the Tissue**:
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