Ac, phiC31 integrase, and FLP expression vectors (Figure 1A) were linearized using NotI, purified using phenol-chloroform extraction, and used as template to synthesize capped mRNAs using the Message mMachine SP6Kit (Life Technologies, Gaithersburg, MD) as described previously (Ishikawa et al. 2013 (link)). The RNAs were purified using an RNeasy MinElute (Qiagen) kit and microinjected into one-cell-stage embryos at the indicated concentration. Microinjection was performed as described previously (Ishikawa et al. 2011 (link)).
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