Figure 1. hsa_circ_0002980 was lowly expressed in LC. (A) RT-qPCR analysis of hsa_circ_0002980 in LC tissues (n = 20) and adjacent tumor tissues (n = 20). (B) The level of hsa_circ_0002980 was identified via RT-qPCR in human liver cells (WRL68) and four LC cells (HepG2, Huh7, Li 7 and BEL 7404). *P < 0.05; **P < 0.01; ***P < 0.001.