What is site of differentiation of two types of lymphocytes?

Explanation

### Step-by-Step Text Solution

1. **Understanding Lymphocytes**: Lymphocytes are a type of white blood cell (WBC) that play a crucial role in the immune system. They are primarily categorized into two types: T-cells and B-cells.

2. **Origin of Lymphocytes**: Both T-cells and B-cells originate from a common precursor known as pluripotent stem cells, which are found in the bone marrow. These stem cells have the potential to differentiate into various types of blood cells.

3. **Differentiation Sites**:
- **B-cells**: These lymphocytes mature and differentiate in the bone marrow itself. After maturation, they can further develop into memory cells and plasma cells, which are essential for the immune response.
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