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. 2014 Jan 27;9(1):e86594. doi: 10.1371/journal.pone.0086594

Figure 7. The Absorption Rate of Lutein Associated with Time of Incubation and Concentration Gradient of Lutein in Transfected HEK293 Cells.

Figure 7

(A) Time course of cellular uptake of lutein into the transfected HEK293 cells. The lutein absorption rate in the cells expressing Cameo2+CBP increased with the prolonged incubation time and achieved plateau after 8 h incubation. (B) Effect of lutein concentration on the cellular uptake of lutein. The absorption rate of lutein was positively related to the lutein concentration in cells expressing Cameo2+CBP, and reached plateau at higher lutein concentration (8–16 µM).