Collagen density in the 8th week of post-laser application

In the final week of the study, collagen density has slightly increased in all groups, but the laser alone group (B, D) shows a collagen density similar to that of the control group. (Masson’s Trichrome stain; original magnification x 100).本研究最后一周，所有组别胶原密度均略有升高，但单独激光组（B、D）的胶原密度与对照组相近。（马松三色染色法（Masson’s Trichrome stain）；原始放大倍数×100）