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Effects of lutein (A), zeaxanthin (B), β-carotene (C), dehydroascorbic acid (DHA) (D) and a mix of compounds (zeaxanthin, β-carotene and DHA) (E) on viability of HL60 cells. Cell viability was assessed after 72 h by trypan blue exclusion test assay. The data are expressed as percentage with respect to control (mean ± SD from three independent experiments). a.u.: arbitrary units.
