Composition of Small RNA libraries.

Read Class: Known miRNA: previously identified isoforms of known miRNA including star strands, candidate novel miRNAs: have no bad features and at least one positive or one negative feature and 2 or more positive features listed in results section, confident novel miRNAs: have no negative features and at least two positive features listed in the results section, Homolog of known miRNA: known miRNA that contains sequence features that distinguish from miRBase sequence, non-hairpin: reads that lack a hairpin in their genomic local,novel known miRNA: reads that represent previously undocumented processing variants of know miRNA. other RNA: RNA reads that are inconsistent with miRNA features and are not members of the following classes of RNA: rRNA,scRNA, repeats (including repetitive elements), senseRNA (mRNA fragments), sense ncRNA, potential siRNAs, potential siRNAs derived from ncRNAs, snRNA, snoRNA, or tRNA. All miRNA star strands are ‘counted’ as a part of the mature miRNA's category.