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Effects of 5-FU on the viability of Caco-2 cells on chip with different drug administration regimens. Caco-2 cells were exposed to 5-FU (20 μg/mL) for 2 days under Blank, Con, and Pk groups, respectively. Quantitative analysis of cell viability in Caco-2 cells after treatment with 5-FU (20 μg/mL) for 2 days using CCK-8 kit. N = 3, ** p < 0.01.
