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Distortion product otoacoustic emissions in Beethoven backcross progeny. (A and B) DP-grams and (C and D) corresponding histograms for [(C/B)F1 × C)]N2-Tmc1Bth/+ (A and C) and [(C/D)F1 × C)]N2-Tmc1Bth/+ (B and D) backcross progeny at 8 weeks of age. Data were included for both ears of each animal.
