ITGAE and enamel caries: Our results also revealed that B cells and CD103+ DCs were only found in teeth with deep caries (for B cells, 5.38% in deep caries; for CD103+ DCs, 0.63% in deep caries), while plasma cells were much more abundant in deep caries compared to in sound teeth and teeth with enamel caries (2.64% in deep caries, 0% in enamel caries, 0.22% in sound teeth) (Figure S2B).