Rapid growth of miRNA genes. The number of miRNAs registered in miRBase increased rapidly these days. We explored the unclassified and classified mature miRNAs along the development of miRBase from version 5 to 18. The numbers of families were also listed.
Wan et al. BMC Genomics 2012 13(Suppl 8):S15 doi:10.1186/1471-2164-13-S8-S15