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. 2011 Jan 13;6:2. doi: 10.1186/1751-0473-6-2

Figure 4.

Figure 4

Combination of Exon Reads with Junction Reads to Accurately Calculate Gene Expression RPKM Scores. (a) A unique challenge for researchers working with RNA-seq data. The junction reads (red) fail to map back to the reference genome because exons are separated by introns. (b) A demonstration of the ideas of combing exon reads (black) and junction reads (red) to calculate gene expression RPKM scores.