CRISPR/Cas technology targeted a region 240 kb upstream of Kit and 81 kb downstream of Nmu to generate a 1.07 Mb deletion including several genes. The left CRISPR target site was located on Chr. 5: 75,408,45975,408,481 and the right target site was located on Chr. 5: 76,444,36176,444,383 (Build GRCm38). (J:233978)