Though they also mature in other tissues,T-Lymphocytes mostly mature in the thymus gland. They begin their development, much like other leukocytes in red bone marrow. Often they are referred to as T cells. They are a very important part of the body's immune system. When out T cell count is low, we can develop opportunistic diseases and even die.
thymus?
T Cells
bone marrow, thymus tissue, and peripheral lymphoid tissues.
thymus gland
It produces lymphocytes and assists in producing immunity.
They are made in the bone marrow, but B cells mature in the spleen and T cells mature in the thymus.
All T cells originate from hematopoietic stem cells in the bone marrow. Hematopoietic progenitors derived from hematopoietic stem cells populate the thymus and expand by cell division to generate a large population of immature thymocytes. The thymus is an organ located in the upper anterior position of the chest cavity just behind the sternum. The main function of the thymus is to provide an area for T lymphocyte maturation.
The thymus matures T lymphocytes (T cells) which identify foreign antigens. This is also where T cells that would be able to bond with self-antigens (would attack the bodies healthy cells) are weeded out and destroyed.
Since the thymus is the site of lymphocyte development before birth and after birth it secretes regulators that enable those lymphocytes to develop into mature T-cells (the essential cells of immunity), the baby would have no way to defend against infection.
Lymphocytes mature in your thyroid glan. However, they come from your bone marrow--where all cells originate from. They differinciate in the tyroid. There are Natural Killer cells, T cells, and B cells.
The Thymus Gland. It grows slowly until puberty then fully develops thereafter.
Lymphocytes... more specifically T lymphocytes.