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. 1998 Apr 6;141(1):199–208. doi: 10.1083/jcb.141.1.199

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Immunofluorescent costaining of MDCK/Z3 cells for ZO-3 (a) and ZO-1 (b). ZO-3 and ZO-1 are identically distributed at cell borders. Additional staining of the cell cytoplasm is visible for ZO-3. Bar, 5 μm.