Analysis of TEER in CSIc treated with AFB1. TEER in CSIc treated with AFB1 at various concentrations for 24 h. Data are presented as the mean ± SEM; Student’s t-test, n = 6, *p < 0.05, **p < 0.01, versus CON. AFB1, aflatoxin B1; CSIc, canine small intestinal epithelial primary cells; CON, control; TEER, transepithelial-transendothelial electrical resistance.