Exons 3-9 were targeted for deletion with two synthetic crRNAs (targeting GCAGGAAGTTCATAGCCACA(ggg) and TGGGTAACAGATCTACACAC(agg)) and an ssODN (GGCTACAACTACAGGGAGGTTTTGTGCTCTCTAACCTGTGaattcGGCTATGAACTTCCTGCCGC CATCAGCTTCCAAAATACAG) using CRISPR/Cas9 technology. (J:291970)