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T cell differentiation (view source)
Revision as of 08:25, 27 September 2010
, 08:25, 27 September 2010→T-Helper Cell Function
==T-Helper Cell Function==
==T-Helper Cell Function==
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.
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 (Th<sub>1</sub> and TH<sub>2</sub> cells) secrete different sets of cytokines.
[[Image:TH1-2.jpg|thumb|right|200px|TH1 and 2 selection is influenced by infection - B. Catchpole, RVC 2008]]
[[Category:Lymphocytes|E]]
[[Category:Lymphocytes|E]]
[[Category:Adaptive Immune System|C]]
[[Category:Adaptive Immune System|C]]