Figure 3From: Chromatin signatures at transcriptional start sites separate two equally populated yet distinct classes of intergenic long noncoding RNAselncRNA and plncRNA loci tend to show different origins and are associated with different transcriptional properties. (A) Density of transposable element (TS)-derived sequence in elncRNA (green) and plncRNA (blue) exons. (B) elncRNAs (median (elncRNAmaxTS) = 0.41) tend to be more tissue-specific (two-tailed Mann–Whitney test, P < 5 × 10-11) than are plnRNAs (median (plncRNAmaxTS) = 0.22). (C) elncRNAs (median FPKM, (elncRNAexp) = 0.43) tend to be more lowly expressed in erythroblasts than are plncRNAs (median FPKM, (plncRNAexp) = 0.64, two-tailed Mann–Whitney test, P < 0.001). ***P < 0.001. FPKM, fragments per kilobase of sequence per million reads.Back to article page