Masson's trichrome analysis of collagen accumulation.

<p>In the control group and the saline-treated group, the collagen fibers are thick, dense and disorganized. In tissues that had been treated with Rg3 (1, 2, 3 and 4 mg/mL) for 28 days, the collagen fibers were arranged more regularly and were more sparse than those in the control group. Original magnification: 400×.