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Changes on TJ integrity of MDCK II cells induced by flavonoids. Immuno-fluorescence staining of CLD-2, ZO-1, OCLN, and actin were applied to the MDCK II cells exposed to flavonoids at a concentration of 100 μM for 48 h. (A,D,G,J) control (DMSO); (B,E,H,K) HST; (C,F,I,L) QUE. Scale bar = 20 µM. Brightness of images was modified to 160%.
