IFNG and granular corneal dystrophy type II: Co-immunostaining of IFNγ with CD4 and CD8 revealed that numerous CD8+ IFNγ+ T cells were present in the dermal micro-vascular structures, which are known to be enriched with mesenchymal stem cells (Russell-Goldman and Murphy, 2020), in ACD skin, but not in healthy control skin (Figure 7A, Figure 7—figure supplement 1A).