The maturation and development of T-lymphocytes takes place in

Options

A. Thymus
B. Spleen
C. Lymph nodes
D. MALT constitutes about 50 percent of lymphoid tissue in human body

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the maturation and development of T-lymphocytes occurs. T-lymphocytes are a type of white blood cell that plays a crucial role in the immune response.

2. **Identifying the Origin of T-lymphocytes**: T-lymphocytes originate from lymphoid progenitor cells, which are derived from hematopoietic stem cells. These stem cells are located in the bone marrow.

3. **Distinguishing Between Formation and Maturation**: While T-lymphocytes are formed in the bone marrow, their maturation and further development do not occur there.

4. **Locating the Site of Maturation**: After their formation in the bone marrow, T-lymphocytes migrate to the thymus gland, which is the primary site for their maturation and development.

5. **Understanding the Role of the Thymus**: The thymus is essential for the proper functioning of the immune system as it allows T-lymphocytes to mature and become capable of responding to antigens.

6. **Conclusion**: Therefore, the maturation and development of T-lymphocytes takes place in the thymus.

**Final Answer**: The maturation and development of T-lymphocytes takes place in the thymus.

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