Fig. 4
Marker gene expression in the fin mesenchyme and ectoderm of 24 hpf wild-type and fgf24-/- embryos. (A) Wild-type tbx5 expression in the pectoral fin primordia (arrows). (B) tbx5 expression in the absence of fgf24 activity. (C) Wild-type msxc expression in the pectoral fin primordia. (D) msxc expression in the absence of fgf24 activity. (E) Wild-type dlx2 expression in the pectoral fin primordia. (F) dlx2 expression in the absence of fgf24 activity. (G) Wild-type shh expression in the pectoral fin primordia. (H) shh expression in the absence of fgf24 activity. Scale bar: 50 µm. All photos are at the same magnification.