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Naive T cells are activated by antigen presenting cells (dendritic cells). This begins when an antigen (eg. bacterial protein) is taken up/detected by a dendritic cell. In order for the T cell to become activated, it requires 3 different signals:
1. MHC (Major Histocompatibilty Complex) presenting foreign antigen to a T cell receptor -> creates specificity so that the T cell relates to this antigen
2. B7 (on dendritic cell) binds to CD28 (on T cell) - this is known as the co-stimulatory signal. This is basically how the T cell knows that it is interacting with a "professional" antigen presenting cell. Without this signal, the T cell will not be activated by the MHC/antigen signal.
3. Cytokines - these are signalling molecules released by the dendritic cells and stimulate T cell differentiation (tells the T cells what functions to undergo).
What else can I help you with?
What T-cell causes the B-cell lymphocyte to multiply in response to an infection?
Helper T-cells, also known as CD4+ T-cells, are responsible for activating B-cells in response to an infection. Helper T-cells recognize antigens presented by B-cells and release cytokines that stimulate B-cell proliferation and antibody production. This interaction is important for the adaptive immune response to effectively combat infections.
T cells and b cells both arise from the what?
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.
What are the two main immunocompetent cells?
The two main immunocompetent cells are B-lymphocytes (B-cells) and T-lymphocytes (T-cells). B-cells are responsible for producing antibodies, while T-cells have various roles including helping B-cells produce antibodies and directly killing infected cells.
Where do B cells and T cells migrate?
B cells and T cells migrate to secondary lymphoid organs such as lymph nodes and spleen to carry out their immune functions. Here, they encounter antigens, undergo activation, and differentiate into effector cells to mount an immune response.
What sends word to killer T cells and actavaite B cells?
Helper T cells, also known as CD4+ T cells, play a crucial role in activating killer T cells and B cells. Helper T cells recognize antigens presented by antigen-presenting cells, which triggers them to release signals that stimulate the activation and proliferation of killer T cells and B cells to mount an immune response against the specific pathogen.
What T-cell causes the B-cell lymphocyte to multiply in response to an infection?
Helper T-cells, also known as CD4+ T-cells, are responsible for activating B-cells in response to an infection. Helper T-cells recognize antigens presented by B-cells and release cytokines that stimulate B-cell proliferation and antibody production. This interaction is important for the adaptive immune response to effectively combat infections.
What do T cells do What do b cells do?
t cells are killer cells b cells are antibodies
What the diffrernce between t cells and b cells?
its the t and the b
What are the approximate percentages of T cells and B cells?
Approximately 67% T cells and 33% B cells.
T cells and B cells are two types of phagocytes.?
T and B cells are two types of lymphatic cells.
What does the t cells and b cells do?
T cells are part of the immune system and help identify and destroy infected or abnormal cells in the body. B cells produce antibodies that help to neutralize pathogens, such as bacteria and viruses, that have entered the body. Both T cells and B cells play crucial roles in the body's immune response.
T cells and b cells both arise from the what?
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.
What are the three types of lymphocytes?
T-cells B-cells NK cells (natural killer)
How do T cells and B cells of your immune system respond to pathogens?
T cells's primary task is to activate B cells and killer T cells. The B cells searchfor antigens matching its receptors. If it finds such antigen it connects to it, and inside the B cell a triggering signal is set off.
What are the two main immunocompetent cells?
The two main immunocompetent cells are B-lymphocytes (B-cells) and T-lymphocytes (T-cells). B-cells are responsible for producing antibodies, while T-cells have various roles including helping B-cells produce antibodies and directly killing infected cells.
Where do B cells and T cells migrate?
B cells and T cells migrate to secondary lymphoid organs such as lymph nodes and spleen to carry out their immune functions. Here, they encounter antigens, undergo activation, and differentiate into effector cells to mount an immune response.
Do B cells develop in the thymus?
No. Both B- and T-cell precursors come from the bone marrow. B-cells hang around in bone marrow to mature (hence the "B"). T-cells develop in the thymus (hence the "T").
