Fig. 4From: Early effect of Botox-A injection into the masseter muscle of rats: functional and histological evaluationImmunohistological view. a The saline-treated group, b 5-U BTX-treated group, c 10-U BTX-treated group. The immunohistochemical findings demonstrated that the expression of MYH2 was much higher in the 10-U BTX-treated group compared to the saline group (original magnification ×100 without counterstain)Back to article page