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Tongue mechanical/thermal hypersensitivity following CFA application to the tooth pulp in lightly anesthetized rats. (A) Head-withdrawal threshold (HWT) to mechanical stimulation of the tongue. (B) HWT to heat stimulation of the tongue. Aa and Bb: EMG recordings from trapezius muscles during mechanical or heat stimulation of the tongue. ###: P < 0.001 (sham vs. vehicle), +++: P < 0.001 (sham vs. CFA), ***: P < 0.001 (CFA vs. vehicle).
