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Lucifer yellow permeability in presence of novel co-processed blends of Labrasol (2A), Transcutol-P (2B), and Tween-20 (2C) across Caco-2 cell monolayers after 4 h incubation at 37°C. HBSS containing 0.5% DMSO was used as a vehicle control. All measurements are expressed as means ± SD (n = 3)
