Correlation between levels of exonic and intronic RNAs. (A) Plot of normalized read densities for every intron and corresponding exons: the exon-intron densities for every animal were combined and the top half of the dataset based the highest exonic densities is plotted. (B) Histogram of Spearman rank correlations obtained for every intron-exon pairs throughout the time course of LPS treatment. (C) Histogram of minimal (min) and maximum (max) correlations (Y-axis) between an intron and all other introns of the same transcript. The X-axis shows the correlation of the intron with the corresponding exons of the transcript as shown in the panel B. (D) Boxplots of the ratio of maximum/minimum intronic RNAseq density of different introns in the same transcript for each time point. Intronic density was calculated as the average of the 7 animals per each time point. (E) Histogram of maximum ratio of intron/exon densities for each intron that could be found in any of the 42 animals at any timepoint.