273475.fig.006a
(a)
273475.fig.006b
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273475.fig.006c
(c)
Figure 6: Expressions of VEGF, TGF-β, and PDGF by immunohistochemical examinations (×40). (a) Expressions of VEGF pre- and posttreatment in two groups. (b) Expressions of TGF-β pre- and posttreatment in two groups. (c) Expressions of PDGF pre- and posttreatment in two groups. Before treatment there were no significant differences in the expressions of VEGF, TGF-β, and PDGF protein between the ozone group and the control group ( versus 0.82 + 0.04, ; versus , ; 0.91 + 0.04 versus , ). But after treatment the expressions of VEGF, TGF-β, and PDGF were all significantly higher in the ozone group than in the control group ( versus , ; versus , ; versus , ). , .