495
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Changes
→T-Helper Cell Function
==T-Helper Cell Function==
==T-Helper Cell Function==
[[Image:TH1-2.jpg|thumb|right|200px|TH1 and 2 selection is influenced by infection - B. Catchpole, RVC 2008]]
[[Image:TH1-2.jpg|thumb|right|200px|TH1 and 2 selection is influenced by infection - B. Catchpole, RVC 2008]]
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.
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 T<sub>H</sub> 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.
TH cells secrete cytokines for only a short period after they have been activated; the range of cytokines that T<sub>H</sub> cells secrete after activation chiefly determines their function. Different T-helper cell subpopulations (T<sub>H</sub>1, T<sub>H</sub>2 and T<sub>H</sub>17 cells) secrete different sets of cytokines.
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{{Jim Bee 2007}}
{{Jim Bee 2007}}