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Helper T cells detect antigens through the recognition of peptide fragments presented by Major Histocompatibility Complex (MHC) class II molecules on the surface of antigen-presenting cells (APCs). The T cell receptor (TCR) on the Helper T cell binds specifically to the peptide-MHC complex, initiating a signaling cascade that activates the Helper T cell. This activation allows the Helper T cell to proliferate and secrete cytokines, which help coordinate the immune response against the pathogen.
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How do killer cells work?
Killer t cells are activated by helper t cells. The Helper t cells are alerted by the macrophage that has engulfed the virus. It grows antigens to alert the helper t cells. The killer t cells are like white blood cells, there purpose is to fight pathogens.
How are T helper cells activated in the immune response process?
T helper cells are activated in the immune response process when they encounter antigens presented by antigen-presenting cells, such as dendritic cells. This interaction triggers the T helper cells to proliferate and differentiate into specific subsets that help coordinate and regulate the immune response.
How are helper T cells activated in the immune response process?
Helper T cells are activated in the immune response process when they encounter antigens presented by antigen-presenting cells, such as dendritic cells. This interaction triggers the helper T cells to proliferate and differentiate into specific subsets that help coordinate and regulate the immune response.
Foreign antigens pressed into the plasma membrane are recognized by what?
helper T cells B cells so the answer is B for Plato users
What activates helper T cells in the immune response?
Helper T cells in the immune response are activated by antigens presented by antigen-presenting cells, such as dendritic cells. This activation process helps coordinate and regulate the immune response against pathogens.
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 do t cells do?
(t-cells) are involved in cell mediated immunity that can have memory of previous antigens(non self) that have invaded our body. cytotoxic tcells release preforin that destroy tumor cells or antigens helper tcells release cytokines/interlukins that help in more tcell differentiation
What cells engulf antigens and present fragments of them on their own surfaces where they can be recognized by cells that will deal with them?
Antigen-presenting cells, such as dendritic cells, macrophages, and B cells, engulf antigens and present fragments of them on their cell surfaces. These antigens are then recognized by T cells, particularly CD4+ helper T cells or CD8+ cytotoxic T cells, which play a key role in initiating an immune response against the antigen.
What does humoral immunity involves?
The cells which are involved in the production of antibodies are known as B cells. These are effector cells which will secrete anybodies and activate the antigens.
What molecule displays an antigen on the surface of the cells?
Major histocompatibility complex (MHC) molecules display antigens on the surface of cells. There are two main classes: MHC class I, which presents antigens to CD8+ cytotoxic T cells, and MHC class II, which presents antigens to CD4+ helper T cells. These molecules play a crucial role in the immune response by enabling the recognition of foreign substances by T cells.
Lymphocytes that act directly on antigens to destroy them or produce chemicals that are toxic to them called?
Lymphocytes that act directly on antigens to destroy them or produce chemicals that are toxic to them are called T4 cells. They are also known as T helper cells.
What cell stimulates b cells to mature?
T helper cells, particularly CD4+ T cells, stimulate B cells to mature. When activated by recognizing antigens presented by dendritic cells, T helper cells release cytokines that promote B cell activation, proliferation, and differentiation into plasma cells or memory B cells. This interaction is crucial for the development of a robust adaptive immune response.
