Figure 4. ANRIL circular RNAs predominantly contain exons 4-14.

A, cDNA generated in the presence (+R) or absence (-R) of RNase R as in Figure 3C was subjected to PCR using outward facing primers within the same exon as depicted (left) and separated by gel electrophoresis. B and C, The PCR products in ‘A’ were purified, cloned and sequenced. The resulting sequences are shown for each exon pair.