Cover Caption

About the cover: The HepaRG cells were incubated with fluorescent substrates (CDFDA, fluorescent substrate of MRP2 and BODIPY FL vinblastine, fluorescent substrate of BSEP and MDRI) for 30 min at 37°C and then observed under phase contrast and fluorescence microscopy. See the article by Anthérieu et al. on page 516 of this issue.