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Stem–loop structures of putative miRNA precursors. The miRNA sequences are in red and underlined. The actual size of the precursors is not identified experimentally and may be slightly shorter or longer than represented. Multicopy miRNAs and their corresponding precursor structures are not shown. (A) Conserved precursor structures of miR-39 between rice and Arabidopsis. (B) Precursor structures predicted for rice miR-1 to miR-18.
