Question

1. Where do T-cells reach maturity?
A. bone marrow
C. thymus
B. tonsils
D. lymph nodes

Answer 1

T-cells reach maturity in the Thymus

Explanation:

The thymus is a lymphoid organ located in front of the heart and behind the sternum. The progenitors of T-cells are produced in the bone marrow in  a process called hematopoiesis. They then migrate to the thymus where they mature and develop their specific antigenicity. Only about 20% of the progenitor T-cells mature. The rest mainly get destroyed by apoptosis.

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