Larger Image gene expression in Xenopus laevis embryo via in situ hybridization, NF stage 13, bisected embryo, dorsal top. Image copyrighted by Pollet, Nicolas Copyright © Nicolas Pollet, CNRS UMR 8080 Image published in: AxelDB (Image Pages), AXELDB Database Gene Synonyms Species Stage(s) Tissue rdd4.L X. laevis Throughout NF stage 13 mesoderm lateral plate mesoderm Image source: Large scale screen Permanent Image Page Printer Friendly View XB-IMG-30384