SLCO2B1 and hepatocellular carcinoma: In the stomach tissue, the expression levels of Oatp2a1 mRNA and Oatp2b1 mRNA were lower in HCC-DD group compared with HCC group; they were increased in DD group compared with Control group and the expression of Oatp2a1 mRNA in DD group was the highest (P<0.05, Figure 5(c)).