Figure 4.

Photomicrographs of pERK-LI cells and the time course in the number of pERK-LI cells in Vc after heating of the facial skin. A: pERK-LI cells (green), B: NeuN positive cells (red), C: pERK-LI and NeuN positive cells (yellow); arrows indicate pERK-LI cells and NeuN positive cells in A-C. D: Time course in the number of pERK-LI cells after heat stimulation of the skin in capsaicin-treated rats. *: p < 0.05, **: p < 0.01.