Fig. (8). Effects of splice-site mutations in CYBB exon/intron cassettes containing three introns Splicing events identified based on RT-PCR products, luciferase activity, and HaloTag fusion proteins are shown. We used exon/intron cassette-trapping plasmids with or without a mutation (G>C or wild-type) at position +5 of the 5’-splicing donor site in intron 5 of the CYBB gene. The experiment was carried out in triplicate and levels of RT-PCR products were quantified as the weighted ratios obtained from a MCE-202 MultiNA Microchip Electrophoresis System. Schematic representations of the RT-PCR products are shown on the right in the figure.