Question

T-lymphocytes are

• A. Formed in thymus
• B. Formed in bone marrow and mature in thymus
• C. Formed in thymus and preprocessed in bone marrow
• D. Formed and preprocessed in bone marrow

Answer 1

The correct option is B Formed in bone marrow and mature in thymus

A T cell or T lymphocyte is a type of lymphocyte that plays a central role in cell-mediated immunity. T cells can be distinguished from other lymphocytes, such as B cells and natural killer cells, by the presence of a T-cell receptor on the cell surface. Lymphocytes such as B-cells and T-cells are produced in the bone marrow. They are called T- cells because they mature in the thymus.

So, the correct answer is 'Formed in bone marrow and mature in thymus'.