(A) Live imaging of 30 hpf Mnpc2+/m and MZnpc2m/m embryos injected with either 50 pg egfp (Mnpc2+/m n=27, MZnpc2m/m n=31) or npc2 mRNA (Mnpc2+/m n=32, MZnpc2m/m n=37) at the 1-cell stage (n=3 experiments). MZnpc2m/m embryos injected with npc2 mRNA appeared identical to the Mnpc2+/m embryo injected with either egfp or npc2 mRNA. MZnpc2m/m embryos injected with egfp RNA still displayed the defects found in uninjected MZnpc2m/m embryos. EGFP signal is shown in the insets. Scale bars: 500 μm. (B) Magnified images of otic vesicles. The otic vesicle and otoliths were normal in the MZnpc2m/m embryo injected with npc2 mRNA (arrowheads). Scale bar: 250 μm.
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