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Effect of transient transfection with miRNA mimics on carrier-mediated RF uptake in Caco-2 (A) and HuTu-80 (B) cells. Carrier-mediated RF uptake (% over mimic -ve) was measured as described in materials and methods after transfecting with miRNA mimic (negative control mimic, mimic-338-3p, or mimic-423-5p; 50 nM, 48 h). Data are expressed as means ± SE of 3–5 independent experiments (**P < 0. 01). NS, not significant.
