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Garvan Institute of Medical Research Investigators Find that Mice without IL-21 Are Severely Immunocompromised  
7/7/2008 12:10:23 PM

GEN News -- Our immune system depends on interleukin 21 (IL-21), according to a team of scientists. They discovered that this molecule acts as a growth factor for a subset of T cells called T follicular helper (TFH) cells. The researchers say that without IL-21, the TFH cells could neither develop nor survive.
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