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. 2021 Jun 3;4:672. doi: 10.1038/s42003-021-02225-8

Fig. 8. PAG is a mediator of PD-1 signaling.

Fig. 8

A model of the role of PAG in PD-1 signaling. As T cells are stimulated through the T cell receptor and PD-1 is bound to PDL1 or PDL2 PAG is phosphorylated at Y181, Y317, and Y417 and plays a necessary role in the inhibition of T cell function.