NCIt definition : The pre-miRNA is an oligoribonucleotide intermediate of nuclear transcription that
is further processed cytosolically by the Dicer enzyme to form 20-25 nt mature miRNA
products. Such RNA intermediates, typically 65-110 nt in length, form stem-loop structures
that play an important role in the processing of these oligonucleotides to the mature
miRNA form.;