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).
B-cells originate in the bone marrow from hematopoietic stem cells. In the bone marrow, these stem cells undergo a series of differentiation steps to become mature B-cells, which then enter the circulation to perform their immune functions.
T cells and B cells both arise from hematopoietic stem cells in the bone marrow. They undergo differentiation and maturation in the thymus for T cells and in the bone marrow for B cells.
Stem cells has the capability to regenerate and develop into any kind of tissue or organ, when supported with the external nutrients. So they are called as totipotent. There are two kinds of stem cell a)adult stem cells b)embryonic stem cells. There are various researches going on in this area .
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.
Hematopoietic stem cells are responsible for giving rise to all immune cells, including T cells, B cells, and natural killer cells. These stem cells are found in the bone marrow and have the ability to differentiate into various types of blood cells that make up the immune system.
B-cells originate in the bone marrow from hematopoietic stem cells. In the bone marrow, these stem cells undergo a series of differentiation steps to become mature B-cells, which then enter the circulation to perform their immune functions.
They both originate in the red bone marrow. B lymphocytes mature there. T lymphocytes mature in the thymus gland.
T cells and B cells both arise from hematopoietic stem cells in the bone marrow. They undergo differentiation and maturation in the thymus for T cells and in the bone marrow for B cells.
in bone marrow
Antibodies originate in the body from specialized white blood cells called B cells. These B cells produce antibodies in response to foreign substances, such as viruses or bacteria, to help the immune system fight off infections.
Stem cells has the capability to regenerate and develop into any kind of tissue or organ, when supported with the external nutrients. So they are called as totipotent. There are two kinds of stem cell a)adult stem cells b)embryonic stem cells. There are various researches going on in this area .
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.
Hematopoietic stem cells are responsible for giving rise to all immune cells, including T cells, B cells, and natural killer cells. These stem cells are found in the bone marrow and have the ability to differentiate into various types of blood cells that make up the immune system.
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lymphocyte counts
Stem cells in a fetus mature in the yellow bone marrow.
Stem cells develop into plasma cells and B cells also turn into plasma cells. Plasma cells have been exposed to an antigen and then produces and secretes antibodies.