Larger Image asl gene expression in Xenopus laevis embryo via in situ hybridization, NF stage 29 & 30, 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 asl.L X. laevis Throughout NF stage 29 and 30 brain eye otic vesicle cement gland pronephric kidney ventral blood island pharyngeal arch ectoderm epidermis fin neural crest forebrain neuroectoderm pronephric duct lateral plate mesoderm olfactory region Image source: Large scale screen Permanent Image Page Printer Friendly View XB-IMG-30442