Fig. 3
The kcnn4 gene (IK) expression during zebrafish early embryogenesis. Whole‐mount in situ hybridization of zebrafish embryos at stages 12hpf (A,C), 24hpf (B,B′,D,D′), 48hpf (E,G), and 72hpf (F,H). B′ and D′: sense probe controls. Anterior is to the left in all the whole‐mount images, and dorsal is to the top in all transverse sections. A‐D, Lateral view of gene expression of kcnn4. E‐H, Dorsal view of gene expression of kcnn4. The dashed lines indicate the approximate positions of sections. The section images were shown in the insert of corresponding panels. Scale bars: 250 μm for whole mount images. de, distal early tube of the nephric duct; e, eye; hb, hindbrain; n, neural tube; nt, notochord; op, optic vesicle; ov, otic vesicle; tb, tail bud