Larger Image arf4 gene expression in Xenopus laevis, NF stage 29&30 embryo, in situ hybridization, lateral view, anterior left. Image Copyrighted by Pollet, Nicolas Copyright © CNRS UMR 8080, Nicolas Pollet Image published in: AXELDB Database, AxelDB (Image Pages) Gene Synonyms Species Stage(s) Tissue arf4.L arf2 X. laevis Throughout NF stage 29 and 30 cement gland ectoderm eye fin head neural crest pharyngeal arch pronephric kidney somite tail bud lens placode pronephric duct paraxial mesoderm presomitic mesoderm spinal cord brain olfactory region heart primordium posterior wall of neurenteric canal cranial ganglion neuroectoderm Image source: Large scale screen Permanent Image Page Printer Friendly View XB-IMG-29115