Larger Image map3k8 gene expression in Xenopus laevis, NF stage 20 embryo, in situ hybridization, lateral view, anterior left. Image copyrighted by: XDB3 Copyright © XDB3 Gene Synonyms Species Stage(s) Tissue map3k8.L X. laevis Throughout NF stage 20 paraxial mesoderm ventral head region ventral blood island ectoderm epidermis somite Image source: Community submitted Permanent Image Page Printer Friendly View XB-IMG-22730