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Effects of cobalt chloride on the paracellular permeability of b.End3 cells. The permeability was measured using 40 kDa FITC-dextran. Cells were cultured under normal condition (5.5 mM glucose) in the presence of 100 μm cobalt chloride for 1, 3, 6 or 10 days. Permeability was described as absolute values of coefficients. Values are means ± SEM, n = 3. *p < 0.05 versus control
