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hsa_circ_0000034 expression is upregulated in retinoblastoma. (a) Schematic illustration of hsa_circ_0000034 formation. Arrow indicates back-splicing. (b) hsa_circ_0000034 expression in retinoblastoma tissues. (c, d) High hsa_circ_0000034 expression correlated with advanced IIRC stage and optic nerve invasion in retinoblastoma patients. RB: retinoblastoma. *p < 0.05.
