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Effects of L. lactis NZ9000 and L. lactis NZ9000-SeNPs on the expression of tight junction (TJ) proteins in the ileum of mice challenged with ETEC K88. (A) The expression levels of TJ proteins were determined by Western blotting. (B) Statistical results of gray value quantification. All data are presented as the means ± SEM (n = 3). **, P < 0.01; ***, P < 0.001.
