Fig. 3From: Effects of differently shaped TiO2NPs (nanospheres, nanorods and nanowires) on the in vitro model (Caco-2/HT29) of the intestinal barrierTEER measurements of Caco-2/HT29 co-culture barriers before and after 24 and 48 h of exposure to TiO2NPs-S (a and b), TiO2NPs-R (c and d), and TiO2NPs-W (e and f). Results were analyzed with a paired Student’s t-test and represented as mean ± SEM. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page