FIG. 7.

Protein expressions of procollagen type I (A) and MMP-1 (B). Changes according to densitometric analysis (C,D) in the skin of UVB-irradiated and CSE-treated hairless mice. Mice were irradiated with UVB (400 mJ/cm²), treated with 0.5% and 1% CSE, and treated with 1% RP thrice a week for 4 weeks. We performed western blot analysis on 40 μg of total protein from skin tissue lysates. Equal loading was confirmed using antibodies to α-tubulin. The densitometry analysis data are expressed as a percentage relative to the UVB-untreated control. Values are means±SD. # and * indicate significant differences (P<.05) between the UV (−) control and UV (+) control, respectively. ^##P<.01 versus the normal control, **P<.01 versus UV-treated control.