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MTT cytotoxicity assay results: Caco2 (A) 24 h, (B) 48 h and SW-480 (C) 24 h and (D) 48 h. Also, IC50 of 5-FU dosage in various concentrations through cell culture (E). [One star stands for p-value less than 0.05 and two stars stand for p-value more than 0.1].
