Fig. 5. Effect of PPE on MMP-2 (A) and -9 (B) expression in hairless mice. NC: Drinking water intake without UVB irradiation; Con: Drinking water intake with UVB irradiation; PO: 0.1% hydrolyzed collagen (HACP-U2) intake in drinking water with UVB irradiation; OL: 0.05% PPE intake in drinking water with UVB irradiation; OH: 0.1% PPE intake in drinking water with UVB. Values are mean±SEM (n=6). Means with different letters indicate significant differences at p<0.05.
