circRNA expression profile in hepatocellular carcinoma (HCC) with metastasis, HCC without metastasis, and non-tumor tissues

circRNA microArray analysis from Arraystar were used to examine the expression profile in HCC with metastasis, HCC without metastasis, and non-tumor tissues Liver tissues from HCC surgery were distributed into three experimental groups: non-tumor tissue group, tumor without metastasis group and tumor with metastasis group, then perform circRNAs chips by Arraystar Human circRNAs chip (Arraystar)