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Representative case of Ki-67 nuclear protein expression on healthy, dysplastic and neoplastic esophageal tissues in WT and MKR mice. Non-operated mice (healthy tissue): WT male and MKR male at 43 weeks of age. Dysplasia: squamous high-grade dysplastic lesions (HGD) in WT female and MKR female. Cancer: Moderately well differentiated ESCC in WT male and MKR male. Original magnification 40×.
