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<p><b>Micro ribonucleic acid</b> (<b>microRNA</b>, <b>miRNA</b>, <b>uRNA</b>) are small, single-stranded, <a href="page.php?w=non-coding_RNA">non-coding RNA</a> molecules containing 21-23&nbsp;<a href="page.php?w=nucleotide">nucleotide</a>s. Found in plants, animals, and even some viruses, miRNAs are involved in <a href="page.php?w=RNA_silencing">RNA silencing</a> and post-transcriptional <a href="page.php?w=regulation_of_gene_expression">regulation of gene expression</a>. miRNAs <a href="page.php?w=base-pair">base-pair</a> to complementary sequences</p><p>
<a accesskey="3" href="page.php?w=microRNA&amp;p=2">3.Next</a>
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