Give the common site of formation of two types of lymphocytes.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Lymphocytes**: Lymphocytes are a type of white blood cell that play a crucial role in the immune system. They are classified as agranulated lymphocytes, meaning they do not have granules in their cytoplasm.

2. **Types of Lymphocytes**: There are two main types of lymphocytes:
- **B Lymphocytes (B cells)**: These cells are primarily responsible for producing antibodies.
- **T Lymphocytes (T cells)**: These cells are involved in cell-mediated immunity, which includes killing infected cells.

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