Molnár et al. 2004 [81] investigated the effect of 12 natural carotenoids (antheraxanthin, capsanthin, capsorubin, lutein, lycopene, lycophyll, violaxanthin, zeaxanthin, α-carotene, β-carotene, α-cryptoxanthin and β-cryptoxanthin) isolated from several plants (Table 3) on the efflux activity in mouse T-cell lymphoma cells transfected by the human ABCB1 gene (L5178Y–MDR1/A) using the Rh-123 assay [81]. The gene discussed is ABCB1; the disease is T-cell non-Hodgkin lymphoma.