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(A, B & C) are based on phastCons score. (D, E & F) are based on GERP++ score. The control line is based on a similar number of randomly selected non-transcribed genomic regions. A & D – ncRNAs compared to RefSeqs, B & E – intergenic ncRNAs compared to intronic and C& F – 5′ vs 3′ ncRNAs and transcriptional orientation with respect to nearest neighbour genes.
