Larger Image bach1 gene expression in Xenopus laevis, NF stage 28 embryo, in situ hybridization, lateral view, anterior left, head and trunk only. Image copyrighted by: XDB3 Copyright © XDB3 Gene Synonyms Species Stage(s) Tissue bach1.S X. laevis Throughout NF stage 28 ectoderm eye neural crest otic vesicle pharyngeal arch epibranchial placode Image source: Community submitted Permanent Image Page Printer Friendly View XB-IMG-22567