Fig. 6

mRNA expression of the genes in HCC patients with and without metastasis according to microarray data retrieved from the GEO online database. a Microarray data GDS3091 [18] cover nine HCCs with venous metastasis and 11 without as controls. b, c Microarray data GDS274 [19] cover 32 HCCs with portal vein tumour thrombus metastasis, 33 with intrahepatic spread metastasis, and 22 HCCs with no metastasis as controls. *, P < 0.05; **, P < 0.01