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Immunolabelling for ZO-1, occludin, and claudin-1 in skin sections of atopic and clinically normal dogs (magnification 1000×). a,c,e — clinically normal group; b,d,f — atopic group; a,b — ZO-1 immunolabelling; c,d — occludin immunolabelling; e,f — claudin-1 immunolabelling.
