SLCO1B1 and Burkitt lymphoma: The abundance of these transporters (3.18 pmoles OATP1B1 and 2.73 pmoles OATP1B3 per 106 hepatocytes [171]) exceed the number of HLA-DR molecules expressed by the Burkitt lymphoma cell line Raji (2.66 pmoles/106 Raji cells [172, 173]) and some of the highest expressing ovarian cancer cells (0.5 pmoles/106 cells [67]) by 2 to 10-fold, respectively.