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Apparent permeability of [14C]-propranolol, a passive transcellular permeability marker. Studies were subjected to one-way ANOVA with a Bonferroni post-hoc test and Kruskal–Wallis with Dunn's post-hoc test. Non-significant changes (P > 0.05) were seen between monoculture and coculture. Error bars represent 1 standard deviation (n = 3).
