CK20 and CK5/6 Immunohistochemical Staining of Urothelial Neoplasms: A Perspective

Figure 1

(a) Normal urothelium revealing multiple layers of cells including basal cell, intermediate cells, and umbrella cells. (b) Immunohistochemical stain revealing normal staining pattern of the urothelium. The umbrella cells are decorated by CK20 (magenta). The intermediate cells are unstained. Basal cells are decorated by CK5/6 staining (brown).

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