Well there are several types of T cells, but they are all white blood cells
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There are several:Neutrophils: phagocytosis and proteolysisbasophils: Inflammation and allergic reactionsEosinophils: Viral infectionMonocytes: PhagocytosisLymphocytes: Including B cells and T cells, function in humoral immunity
T cells can be divided into CD4 cells (T helper cells) and CD8 cells (cytoxic T cells).There are then many different types of T helper cells, the main ones being TH1 and TH2 cells. TH1 cells are involved in antigen presentation and cellular immunity (eg. phagocytic cells). TH2 cells are involved in humoral immunity (production of antibodies) and allergy reactions.The cytokines (signalling molecules) released by the dendritic cell during T cell activation are responsible for the differentiation of T cells into different types. Further cytokines then cause the differentiation into TH1, TH2, etc.(There are also regulatory T cells which suppress the functions of other T cells to prevent the immune system attacking self molecules)
this is my question what is the function of t-cells?
T Cells
The difference between humoral immunity and cell-mediated immunity is that humoral immunity uses B cells and T cells whereas mediated immunity only uses the T cells. Also humoral immunity provides a defense against antigens and pathogens in body fluids whereas cell-mediated immunity protects from abnormal cells and pathogens inside living cells.
it produces antibodies that circulate in body fluids.
The b cells are specifically responsible for cell mediated immunity.
No, it's cellulair. Handy to be recognized by the cytotoxic T-cells.
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Actually acquired immunity consists of "humoral immunity" and "cell mediated immunity. Acquired immunity is the same with adaptive immunity, it is when the antibodies are produced within the bodies after the exposure of pathogen. Humoral immunity secreted antibodies while cell mediated immunity involves in production of T lymphocytes.
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.
humoral immunity
T cells are part of the adaptive immunity. There are two major types of T cells: CD4+ T helper cells and CD8+ T cytotoxic cells. T helper cells primarily function in humoral immunity whereas T cytotoxic cells are important in cell mediated immunity. T helper cells produce cytokines to activate other immune system components like macrophages, B cells, etc. whereas T cytotoxic cells primarily kill infected cells.
Humoral immunity is effected by antibodies produced by plasma cells toward a specific foreign antigen. Cellular immunity does not directly involve antibodies, but refers to cellular destruction of alien cells/tissues by production of cytotoxins locally, typically the latter are produced by T-lymphocytes and natural killer cells.
ANTIBODY IMMUNITY IS BETTER TERMED AS HUMORAL IMMUNITY Humoral immunity is acquired by B-lymphocytes and T-helper lymphocytes as An antigen is engulfed by antigen processing cell (APC) e.g. , B-cells then a part of an antigen (epitope) is presented to T-helper cells in association with MHC-II (MAJOR HISTOCOMPATIBILITY COMPLEX) then T-helper cell activates B-cell to produce effector cell (plasma cell) and memory cell then plasma cell secrete antibodies which neglify harmful or toxic effects of the above antigen. CELL MEDIATED IMMUNITY Every cell of the body can show this response while in the above case only APC can show humoral response A whole foreign body/ antibody is engulfed by the cell then epitope is represented to cytotoxic T-lymphocytes(CTLs) then CTLs secrete certain chemicals which kill the cell along with foreign body.
Lymphocytes have a <protective role>. Particular function depends on the type of lymphocytes. T cells are involved in cell-mediated immunity whereas B cells are primarily responsible for humoral immunity (relating to antibodies). Protective functions are done through: lysis of virually infected cells or tumor cells, realease of cytokines and growth factors to stimulate otherimmune cells, immunoregulation and cytotoxicity, destruction of virally infected cells, secretion of antibodies