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. 2018 Feb 13;11:2. doi: 10.1186/s13044-018-0046-9

Fig. 2.

Fig. 2

Schematic representation of Treg cell structure. CD25, cluster of differentiation 25; CD4, cluster of differentiation 4; CTLA-4, cytotoxic T cell antigen 4; OX-40, tumor necrosis factor receptor superfamily, member 4; 4-1 BB, tumor necrosis factor receptor superfamily member 9; GITR, tumor necrosis factor receptor superfamily member 18