Figure 2: Schematic of pre-miRNA compartments. According to Han et al. [32], we divided the pre-miRNA hairpin loop into four main regions: basal segment, lower stem, miRNA: duplex, and the terminal loop. The black circles represent the miRNA: duplex which we extracted using a flexible sliding window of 22 nt nucleotides. The dashed boxes represent flanking regions. The hollow circles represent the nucleotides of the immature miRNA in the pre-miRNA.