Additional file 1.

The flow results of data filtration and distribution of sequenced small RNAs across different categories. After sequential filtration, the raw data in each library were separated into low and high quality reads. High quality reads with at least 18 nt were differentiated into categories of short sequencing reads, including rRNA, tRNA, snoRNA, fragments of sense and antisense exons and introns of coding genes, repeat sequences in transposable elements, unannotated short sequencing reads and some annotated miRNAs. Novel miRNAs were screened from unannotated sequencing reads and repeated sequences in transposable elements. Final miRNA data in each library are highlighted in blue. (A) Yield of whole body. (B) Yield of anterior-middle silk gland. (C) Yield of posterior silk gland.

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Liu et al. BMC Genomics 2010 11:148   doi:10.1186/1471-2164-11-148