Repertoire of Sja-mir-36a isomers and a typical miRNA cluster. A. Sequences and the number of reads of the mature miRNA of Sja-mir-36a and the complementary miR* are represented in red and blue respectively. The predicted structure of the pre-miRNA is represented on the right side. B. The predicted secondary structure of a pre-miRNA containing a cluster of Sja-mir-2a, Sja-mir-2b, and Sja-novel-36, which form three hairpin stem-loop structures. The sequences of the mature miRNAs are shown in red and the miRNA* strands are shown in blue.