Figure 4. Hydroxyproline levels in the full-thickness incision. (A) and excision wound (B) tissue of mice treated with vehicle and BCOP. NC, normal control group; BCOP-L, 0.75 g/kg bovine bone collagen oligopeptides group; BCOP-M, 1.50 g/kg bovine bone collagen oligopeptides group; BCOP-H, 3.00 g/kg bovine bone collagen oligopeptides group. Values were presented as mean ± SD. *Compared with the NC, statistical significance was set at p < 0.05.