Fig. 1From: S100 and p65 expression are increased in the masseter muscle after botulinum toxin-A injectionCortical bone of the rat mandibular ramus. The arrows indicate the mandibular ramus. a Saline-treated group; b 5-U BTX-A-treated group; c 10-U BTX-A-treated group (H&E stain, original magnification ×20)Back to article page