CXCR6 and hepatocellular carcinoma: To date, mRNAs and microRNAs associated with HCC development are innumerably reported, among which mRNAs and microRNAs pro- or anti- metastasis and angiogenesis remain highlights in recent several years, such as twist1 [24], CXCR6 [25], vasohibin2 [26], mir-29b [6], mir-195 [12].