VPEP-elicited OT-I T cells surveil the murine periodontium. (A) Lateral view of decalcified mandibula. Magnified images 1 and 3 are from the indicated locations, but from different tissue slices of the same tissue. (B) Aerial view of decalcified mandibular molar dental pulp in which OT-I T cells are present. L and R denote left and right second molars. Arrowheads denote location of OT-I T cells. Scale bars in A and B represent 100 µm.