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Differentiation of human intestinal Caco-2 cells. Quantitative RT-PCR analysis of DMT1, FPN, and HO-1 in Caco-2 cells during days 7–21 after seeding. Data are expressed as mean ± standard error (SE). n = 3; *, p < 0.05. Asterisks indicate levels that are statistically significantly different from those on day 7.
