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Microscopic images of time depended sequence of Caco-2 cells. Note, HNF6 gene expression increased with time and cell culture confluency up to day 11 but declined thereafter (see Figure 2 for gene expression data). A: 0 d; B: 3 d; C: 5 d; D: 7 d; E: 11 d; F: 17 d.
