Chl is a maternal factor that is also zygotically expressed later in development and has spatiotemporal expression patterns that differ from but overlap those of zebrafish chordin ( Chd ) , suggesting differences but also possible overlap in developmental roles of the two proteins .
B-GeneOrGeneProduct O O O O O O O O O O O O O O O O O O O O O O O O B-OrganismTaxon B-GeneOrGeneProduct O B-GeneOrGeneProduct O O O O O O O O O O O O O O O O