Fig. 2From: Apoptotic action of botulinum toxin on masseter muscle in rats: early and late changes in the expression of molecular markersImmunohistochemical findings of MYO2a expression. a Both BTX-A-treated groups displayed higher MYO2a expression than the saline-treated group (original magnification ×100). b The 5 U BTX-A-treated group and 10 U BTX-A-treated group had significantly higher values compared with the saline-treated group at 2 weeks after injection (*P < 0.05)Back to article page