D Expression of Prox1a and Engrailed proteins (Eng) in somites of wild-type, MZgrk2 and grk2-GFP mRNA injected MZgrk2 embryos at 30hpf. Each panel shows Prox1a in green, Eng in red and the merge images with DAPI staining in blue. (n=10 for each sample). Scale bar, 50μm. 