Fig. 13. Immunofluorescence with anti-Pax7 (red) and anti-GFP (green) on transverse sections of tadpole myotomes. (A) Pax7 in ungrafted tadpole. (B) GFP immunoreaction on myotome in PSM grafted embryo. (C) Double immunostaining of Pax7 and GFP on muscles from late medial PSM graft. (D) Double immunostaining of Pax7 and GFP on muscles from early medial PSM graft. Co-labelling is seen only in the late grafts. Scale bars: 5 µm.