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MTT cytotoxicity assay of pectins in HCT 116 (A), Caco-2 (C), HT-29 cells (E), and 0.2 mg/mL pectins in combination with SN-38 ((B,D,F) for HCT 116, Caco-2, and HT-29 cells, respectively). Incubation time was 48 h. The means of the three experiments ± SD are presented (* p < 0.05). Statistical significance was checked between the studied probes and controls (no pectin) and between probes containing only pectin and pectin combined with SN-38.
