ABCC1 and lung cancer: Bile acids were also shown to be effective at restoring accumulation of doxorubicin into doxorubicin-resistant ABCC1-expressing H69AR lung cancer cells, with deoxycholic acid (200 μM) being slightly more effective than β-cholanic acid (200 μM) at restoring accumulation (95.5% and 87.8% of parental H69 cells, respectively; Fig. 1e).