Fig. 8
From: Tooth and scale morphogenesis in shark: an alternative process to the mammalian enamel knot system
A summary of epithelial gene expression patterns in tooth and scale buds of the catshark Scyliorhinus canicula, in comparison to mouse molar development. Co-expression of anti- and pro-proliferative signals are colored similarly in shark tooth and scale buds and mouse tooth buds, Fgf and Bmp zones of expression correspond to Fgf8 and Bmp4 in the catshark, Bmp4 and Fgf4 in mouse (following [17]). E: epithelium; M: mesenchyme; oe: outer epithelium; ie: inner epithelium