This is notably the case for the hepatoma HuH-7 cell line, already used for analyzing regulation of the ABC transporters MRP2 [22], BSEP [23] and P-gp [24], and of the SLC transporter organic anion transporter (OAT) 7 (SLC22A9) [25]. Here, SLC22A9 is linked to hepatocellular carcinoma.