Fig. 5

Relative mRNA (A) and protein (B) expression of tight junction proteins ZO-1, claudin-1, and occludin in nonylphenol-induced IEC-6 cells with or without the exposure of Chinese yam polysaccharides (YP) and selenite-grafted products YPSe-I and YPSe-II at 40 µg/mL for 24 h. Different letters above the columns indicate that one-way ANOVA of the mean values differs significantly (p < 0.05).