FIGURE 4.

Detection of skin mechanical properties and fibre deposition 10 d after healing. A, At 10 d after healing, the skin on the wound of each group was taken for tensile fracture test, and the experimental results were recorded. Origin software was used to analyse the statistics. B, The Young's modulus of normal, control and Hst 1 group. C, The maximum tensile stress suffered by different groups. D, The maximum tensile length suffered by different groups. E, The stress relaxation was tested on the wound skin of the two groups 10 d after healing, and data were analysed by the Origin software. F, The relaxation rate of different groups. G, The staining of collagen fibre, reticular fibre and elastic fibre on the wound 10 d after healing and the distribution of type I collagen and type III collagen was staining by Sirius red staining. The data provided are one of the representative data. All experiments were repeated three times in an independent occasion. Data are shown as mean ± SE. (*P < .05; **P < .01)