SIRV-Set 4 (Iso Mix E0 / ERCC / long SIRVs)The Spike In RNA Variants (SIRVs) are sets of transcript designed to validate and control the performance of RNA sequencing workflows, especially how bioinformatics algorithms correct biases introduced by library preparation and sequencing. This SIRV Set 4 combines the equimolar SIRV isoform mix E0, the ERCC mix, and the long SIRVs. The E0 mix provides controls for resolving isoform complexity by containing 69 SIRV isoforms at the same molarity. This