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Morphological changes in semi-thin sections of submandibular gland after BoNT application. Sham (a) treated with saline, (b) treated with BoNT/A, (c) treated with BoNT/B, (d) treated with BoNT/A+B. (e and f) Represent amylase expression in 5 μm thin tissue sections of submandibular gland treated with either saline (e) or BoNT/B (f). Magnification, × 40. BoNT, botulinum toxin.
