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Coronal section of excised lingual frenulum under tension (specimen 3). (a) Frenulum under tension (tongue elevated). (b) Frenulum under tension (tongue retracted). (c) Excised frenulum. (d) Mid frenulum: PSR, genioglossus fibers yellow. (e) Mid frenulum: MTC, genioglossus fibers brown. (f) Mid frenulum: higher magnification of image E.
