Figure 1. Distribution patterns of p-JNK, p-c-Jun, and HSPs in non-treated and one-hour groups. (a-h) Non-treated group. Signals of neither p-JNK nor p-c-Jun were detected in odontoblasts (a,c). Signals of p-JNK were not observed in any pulp cells (a,b), whereas signals of p-c-Jun (white arrowheads) were in only a few pulp cells close to odontoblasts (c). HSP70 (black arrows) and HSP27 (white arrows) were detected in the cytoplasm of most odontoblasts (ob) and some pulp cells (e-h). (i-p) One hour after injury. Signals of p-JNK (black arrowheads), as well as p-c-Jun (white arrowheads), were observed in a few pulp cells, but not in odontoblasts (i-l). There were no changes in the intracellular localization of HSP70 (black arrows) and HSP27 (white arrows) both in odontoblasts and in pulp cells (m-p). OBR, odontoblast region; PC, pulp cells; ob, odontoblasts. Scale bar = 10 µm.