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The degree of wound healing in the rhEGF (10 µg/g) treatment group and control (ointment base) group. Residual Wound Area (%) = [R(2~12)/R(1)]×100, where R(1) and R(2~12) represent the area remaining at postoperative days 1 and day 2~12, respectively. The wound-healing curve was fitted using the Boltzman equation and the half heal time (HT50). Each bar represents the mean ± SE. *p < 0.01 compared with the control (ointment base) group.
