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. 2022 Feb 8;9:8. doi: 10.1186/s40580-022-00299-6

Fig. 5.

Fig. 5

Impedance analysis in a human gut-on-a-chip. Impedance spectra showing the development of an intestinal epithelial barrier cultured with A Caco-2 cell only and B co-culture with Caco-2 cells and HUVECs. C Epithelial resistance with respect to culture days, showing that the resistance of the co-culture model was increased with culture days. D Epithelial impedance versus calculated TEER analysis in the co-cultured model