Extended Data Fig. 3: FISH in combination with antibody staining of pectoral fin, skin and hair cells at 10 dpf.

a, The Tomato expresses in skin and hair cells at 10 dpf in the transgenic line Tg(krt18:Tomato). b, Labelling of FISH-ctgfa (a pectoral fin marker), anti-Tomato and DAPI in the pectoral fin (dashed line, top view) in Tg(krt18:Tomato) at 10 dpf (3D stack of images; 152 µm, 38 slices, 4 µm each slice; dorsal view). c, Labelling of FISH-ctgfa (a pectoral fin marker), anti-Tomato and DAPI in the pectoral fin (dashed line, front view) in Tg(krt18:Tomato) at 10 dpf (3D stack of images; 152 µm, 38 slices, 4 µm each slice; ventral view). Note that the Tomato expresses in the skin and FISH-ctgfa expresses in the pectoral fin under the skin. d, Labelling of FISH-krt18 (the skin and hair cells specific-gene), anti-Tomato and DAPI in skin and hair cells in Tg(krt18:Tomato) at 10 dpf (3D stack of images; 232 µm, 58 slices, 4 µm each slice). Note that the FISH-krt18 merges with Tomato and expresses strongly in hair cells (arrowheads) and weekly in the skin. BF, bright field. Scale bar, 100 µm.