RNA probes were produced with digoxigenin or fluorescein labeling mix (Roche). huc, her4, myoD, dlc, tbx24, her1 and mib plasmids were used as templates26 (link)44 (link)45 (link)46 (link)47 (link). The templates of dystrophin, foxc1a, fgf8a, papc, tcf15 and p53 were generated by RT-PCR with primers (listed in supplementary Table 6). The protocol of WISH followed the instruction of previous literatures48 (link)49 (link)50 (link). Embryos were mounted in 95% glycerol (Sigma, cat:15523)/PBST (UniRegion Bio-Tech, cat:UR-PBS001 and Tween20) pH 5.5 or flat-mounted in 95% glycerol/PBST pH 5.5 or 2:1 benzyl benzoate (Sigma, cat:B6630)/benzyl alcohol (Alfa Aesar, cat:041218). Images were captured by Zeiss Axiovision Imager A1 or Zeiss Discovery V8.
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