Fig. 2From: Quantitation of next generation sequencing library preparation protocol efficiencies using droplet digital PCR assays - a systematic comparison of DNA library preparation kits for Illumina sequencingSchematic of the ddPCR assay to test the amount of DNA remaining at each step of the library preparation (using DNA fragment specific primers shown by blue arrows [15]) and to measure the amount of DNA fragment bearing adaptors after the ligation step (using the adaptor specific primers shown in orange) and P5/P7 primers after the amplification step (using the P5/P7 primers shown in green)Back to article page