Representative H&E staining and NQO1 immunostaining of the esophagus of Nrf2L30F/L30F::Keap1flox/floxmice at 1 week after TAM treatment as a control and Nrf2L30F/L30F::Keap1flox/flox::K5CreERT2 mice at 1 and 4 weeks after TAM treatment. Scale bars, 100 μm.