Fig. 1
From: Important cardiac transcription factor genes are accompanied by bidirectional long non-coding RNAs
The screening procedure of lncRNAs. a The flowchart for the identification of lncRNAs expressed in the mouse heart. b The histograms of expression levels (fpkm) at E10.5. The number of genes expressed at E10.5 is shown in each parenthesis. The expression levels of lncRNAs are generally lower and lncRNAs with tissue-specificity rarely exceed 10 fpkm (red circle). c The distances from the nearest protein-coding genes were calculated and the distributions were plotted based on RNA-type. We require genes to be expressed in the ventricle at a minimum of one stage. The number of genes in each category is shown in the parenthesis. Heart-selective genes were generally located at greater distances