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. 2017 Jun 22;12(6):e0176596. doi: 10.1371/journal.pone.0176596

Fig 2. Non-human primate miRNA is poorly characterized.

Fig 2

Only 12 of the ~300 known primate species have any entries in miRBase (release 21). The majority of these miRNA are predicted based only on homology (shown in blue); only four species (chimpanzee, gorilla, orangutan, and rhesus macaque) have sequences that are experimentally validated through RNAseq or other expression analysis (shown in purple). The number of characterized human pre-miRNAs (n = 1881) is still more than twice as large as that of chimpanzee (n = 655).