Figure 2. Characterization of identified circular RNAs (circRNAs) in orbital venous malformation (OVM) and normal orbital vascular tissues. A: The number of identified circRNAs in OVM (OVM1, OVM2, OVM3, and OVM4) and normal orbital vascular tissues (Control1, Control2, Control3, and Control4). B: Venn analysis of identified circRNAs and published circRNAs in circBase. C: Length distribution of identified circRNAs. D: Chromosome distribution of identified circRNAs. E: Classification of identified circRNAs. F: The exon number distribution of exon-derived circRNAs.