MKI67 and eosinophilic esophagitis: Immunostaining of esophageal tissues revealed increased phospho-EGFR expression throughout the mucosa in EoE mice, along with increased proliferation of Ki67+ cuboidal basal cells (Fig. 4F, G, Supplementary Fig. 6A), indicating robust upregulation of phospho-EGFR in EoE mice model.