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. 2016 May 19;2016:1720827. doi: 10.1155/2016/1720827

Figure 4.

Figure 4

T regulatory cells can inhibit the immune response by three mechanisms: (a) By competition with effector cells for IL-2. (b) Through cAMP-mediated immunosuppression. (c) By adenosine production via the ectoenzymes CD39 and CD79.