Fig 2. PD-1 expression recovers in T1D follow up.

A. Subpopulations of T cells, one that down regulates PD-1 and the other that upregulates PD-1 B. Expression of PD-1 in T cells from T1D after 4–6 months post diagnosis (T1D Follow up) (* indicate p < 0.05). Top left CD3⁺ CD4⁺ lymphocyte gate, top right CD3⁺ CD8⁺ lymphocyte gate, bottom left CD3⁺ CD4⁺ large gate, and bottom right CD3⁺ CD8⁺ large gate.