In OLP, we found that CD123+ pDCs were rarely seen in the subepithelium of BM specimens (S1 Fig), whereas CD11c+ mDCs were observed as infiltrating cells beneath the basal layer, and the number of CD11c+ mDCs positively correlated with the number of GATA3+ Th2 cells. Here, GATA3 is linked to oral lichen planus.