Fig. 2
Targeted knock-in of Venus fluorescent protein into the otx2 locus. Expression of Venus fluorescent protein at 24 hpf. Images were taken from live embryos anesthetized in MS-222. (A) Left panel shows dorsal view with the anterior of the embryo facing upwards, right panel is a merged image of the fluorescent and transmitted light channels. Venus is expressed in the retina and midbrain, sharply abutting the MHB (dotted line). (B) Lateral view of an embryo expressing Venus. Left panel shows fluorescent channel and right panel shows a merged image of the fluorescent and transmitted light channels. All images are maximum intensity projections covering 50 μm tissue with a Z-interval of 2 μm. Mb, midbrain; Hb, hindbrain. Scale bar: 100 μm.