Larger Image sparc gene expression in Xenopus laevis embryo via in situ hybridization, NF stage 13, anterior view, dorsal top. Image copyrighted by Pollet, Nicolas Copyright © CNRS UMR 8080, Nicolas Pollet Image published in: AxelDB (Image Pages), AXELDB Database Gene Synonyms Species Stage(s) Tissue sparc.S X. laevis Throughout NF stage 13 notochord dorsal neural groove axial mesoderm Image source: Large scale screen Permanent Image Page Printer Friendly View XB-IMG-30197