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Expression levels, reported as Delta Cq, of mRNA coding for TNF-α in Caco-2 cells treated with increasing concentrations of (a) (S), and (b) (R) naringenin enantiomers (1–100 µg/mL) and and IL-6 in Caco-2 cells treated with increasing concentrations of (c) (S) and (d)(R) naringenin enantiomers (1–100 µg/mL). * Indicates statistically significant differences between treated and untreated cell cultures, as reported in the text.
