Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2180-14-19/MediaObjects/12866_2013_Article_2184_Fig4_HTML.jpg)
ZO-1, Claudin-1 and Occludin mRNA levels in Caco-2 monolayers after 6 h of exposure to gliadin (1 mg/ml) alone or in combination with viable L.GG (10 8 CFU/ml), in presence or absence of polyamines following administration of α-Difluoromethylornithine (DFMO). All data represent the results of three different experiments (mean ± SEM). A. ZO-1 mRNA levels; B. Claudin-1 mRNA levels; C. Occludin mRNA levels. Data were analyzed by Kruskal-Wallis analysis of variance and Dunn’s Multiple Comparison Test. (*) P < 0.05 compared to gliadin treated cells.