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T cell differentiation (view source)

Revision as of 08:25, 27 September 2010

21 bytes removed , 08:25, 27 September 2010

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==T-Helper Cell Function==

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~~[[Image:TH1-2.jpg|thumb|right|150px|TH1 and 2 selection is influenced by infection - B. Catchpole, RVC 2008]]~~

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The function of T helper cells is to regulate the immune response. The cytokines they secrete exert their influence on other cell populations; most of the different effector cells of the immune system are affected by one or more of the cytokines secreted by TH cells.

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* The function of T helper cells is to regulate the immune response.

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** The cytokines they secrete exert their influence on other cell populations.

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*** Most of the different effector cells of the immune system are affected by one or more of the cytokines secreted by TH ~~cells.~~

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* TH cells secrete cytokines for only a short period after they have been activated.

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* The range of cytokines that TH cells secrete after activation chiefly determines their function.

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** Different T-helper cell subpopulations secrete different sets of cytokines.

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*** Th1 and TH2 cells.

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TH cells secrete cytokines for only a short period after they have been activated; the range of cytokines that TH cells secrete after activation chiefly determines their function. Different T-helper cell subpopulations (Th1 and TH2 cells) secrete different sets of cytokines.

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[[Image:TH1-2.jpg|thumb|right|200px|TH1 and 2 selection is influenced by infection - B. Catchpole, RVC 2008]]

[[Category:Lymphocytes|E]]

[[Category:Adaptive Immune System|C]]

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