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• Mature T cells leave the thymus as naïve T cells and populate organs such as the spleen, lymph nodes, bone marrow, and blood, where they may become memory T cells after antigen exposure.
• T cell development is dependent on the thymus, and T cells cannot develop if a fetus lacks a thymus.
• T cells develop from hematopoietic stem cells in the bone marrow and complete their development in the thymus, a specialized organ in the chest.
• Protein-energy malnutrition (PEM) leads to atrophy of the thymus, which reduces the number of circulating T cells and decreases the effectiveness of the memory response to antigens.
• Cell-mediated immunity is carried out by T cells, which are lymphocytes that develop in the thymus.
• Helper T-cells are specialized lymphocytes that mature in the thymus and assist other T-cells and B-cells in performing their functions.
• T cells develop from hematopoietic stem cells in the bone marrow and complete their development in the thymus.
• The thymus is a specialized organ of the immune system located in the chest where immature lymphocytes develop into mature T cells and T cells with the potential to attack normal tissues are eliminated.
• T cells travel from the bone marrow to the thymus via the bloodstream to mature.
• The bone marrow serves as a training ground for B-cells, and the thymus serves as a training ground for T-cells.
• During T cell development in the thymus, immature lymphocytes mature into T cells, and T cells with the potential to attack normal tissues are eliminated.