Figure 2. Distribution patterns of p-JNK, p-c-Jun, and HSPs one day after injury. (a-c) Signals of p-JNK (black arrowheads) were frequently observed in nuclei of pulp cells, but not in odontoblasts. (d-f) Signals of p-c-Jun (white arrowheads) were also observed in many pulp cells and some odontoblasts. (g-i). HSP70 translocated into the nucleus from the cytoplasm (black arrows) only in pulp cells, not in odontoblasts. (j-l) The distribution pattern of HSP27 did not change (white arrows). OBR, odontoblast region; PC, pulp cells; ob, odontoblasts. Scale bars = 10 µm (low magnification) and 5 µm (high magnification).