The locomotion analysis of 5 dpf zebrafish larvae was carried out by using the DanioVision system (Noldus Information Technology, Wageningen, Netherlands). The confocal imaging was performed by using a TCS-SP8 LSM confocal imaging system (Leica, Wetzlar, Germany). The zebrafish embryos were embedded as we previously did.37 (link) Photographs of in situ hybridization results were taken by using a DP70 camera on an Olympus stereomicroscope MVX10. Statistical comparisons of the data were carried out by Student’s t-test, and P < 0.05 was considered statistically significant.