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A. The thickness of dermal layer was much thicker in TSG group than the other two groups (×200). And TSG group had more flattered edge than the control group and PME group. B. The result of image scan showed that the thickness of dermal layer in TSG group was significantly thicker than control group and PME group (p<0.01, vs. Control group, p<0.01, vs. PME group).
