Stem cells that will form T cells are modified in the Thymus.
Stem cells seed which structure that helps develop T cells are the thymus gland.
Multipotent hematopoietic stem cells
B cells and T cells both originate from the haematopoietic (or hematopoietic) stem cells located in the bone marrow. T cells mature in the thymus. B cells mature in the secondary lymphoid tissues (such as the spleen).
Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide (through mitosis) to produce more stem cells. So, they basically have the ability to grow any type of cell. T cells or T lymphocytes are a type of white blood cell that plays a central role in the immune system. So, they basically help us resist disease.
t cell
Stem cells seed which structure that helps develop T cells are the thymus gland.
Multipotent hematopoietic stem cells
B cells and T cells both originate from the haematopoietic (or hematopoietic) stem cells located in the bone marrow. T cells mature in the thymus. B cells mature in the secondary lymphoid tissues (such as the spleen).
All T-cells originate in the same place in humans. They originate from hematopoietic stem cells which are located in the bone marrow.
Wikipedia: All T cells originate from haematopoietic stem cells in the bone marrow.
Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide (through mitosis) to produce more stem cells. So, they basically have the ability to grow any type of cell. T cells or T lymphocytes are a type of white blood cell that plays a central role in the immune system. So, they basically help us resist disease.
t cell
Stem cells, T Helper cells, and Lymphocytes all help fight diseases.
Please be patient with me. I've had to look this up. It appears that the blood cells differentiate from a common stem cell. They differentiate into two stem cells: 1. a myeloid stem cell. The myeloid stem cell matures into a CFU-GEMM progenitor cell which farther differentiates into five progenitors for eosinophils, basophils, neutrophils, monocyte, platelets, and red blood cells and 2. The lymphoid stem cell then differentiates into pro B and pro T cells and on to B lymphocytes and T lymphocytes. I believe it is the T lymphocyte which is known as the killer cell. There are many steps in this process and two of the cells also become tissue cells. However, getting back to your original question; there is some process as cells differentiate, (become different cells), from a common stem cells that turns some genes on and other genes off. All cells have the same DNA within the same organism, but some genes or turned off in some cells.
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.
lymphocyte counts
Richard T. Maziarz has written: 'Blood and marrow transplant handbook' -- subject(s): Hematopoietic Stem Cell Transplantation, Transplantation, Hematopoietic stem cells, Nursing