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(2.83 �� 0.65%, 2.67 �� 0.8% and 2.24 �� 0.23% vs. 7.5 �� 0.89%, 6.87 �� 1.68% and 6.32 �� 2.18% in WT controls; p http://www.selleck.cn/products/bgj398-nvp-bgj398.html recipients, we found significant changes within the graft itself. As determined by immunohistochemical staining of the grafts, we observed a significant increase in the number of Foxp3+ CD3 T cells in the grafts recovered from IL-6?/? recipients when compared to grafts from WT controls (Figure 5C; 11.2 �� 5.3 per high power field vs. 0.5 �� 1.6 for WT recipients; p http://www.selleckchem.com/products/Bortezomib.html of fully allogeneic BALB/c hearts (MST: >100 vs. 22 days (CTLA4Ig only); p http://www.selleckchem.com/products/gsk1120212-jtp-74057.html IL-5, IL-10 and IL-13, protect against extracellular pathogens and provide help to B-cell function (19). In the context of autoimmunity and in some transplantation models, Th1 cells were believed to be pathogenic, while Th2 cells were thought to be protective. However, the simplicity of this paradigm has been challenged by subsequent studies (20). Recently, another subset of Th cells, termed Th17, was identified. The newly discovered Th17 cells play a critical role in many autoimmune diseases that were traditionally thought to be mediated by Th1 immunity (21). Growing evidence indicate that each type of Th cells, including Th1, Th2 and Th17 cells, is capable of mediating allograft rejection (3,22,23).