... head. † Authors for correspondence (e-mail: [email protected] ; [email protected] ) * These authors contributed equally to this work 12 12 2008 © 2009. 2009 Hox genes Head morphogenesis Hyoid bone Jaw development Mouse Neural crest cells A large...

... gene-expressing neural crest cells are unable to yield the lower jaw apparatus including the entoglossum and basihyal even in the BA1 environment. In contrast, the posterior part of the hyoid bone can be constructed by any region of the neural crest cells whether or not they are under the regulatory...

...Gérard Couly; Anne Grapin-Botton; Pierre Coltey; Nicole M. Le Douarin ABSTRACT The mesencephalic and rhombencephalic levels of origin of the hypobranchial skeleton (lower jaw and hyoid bone) within the neural fold have been determined at the 5-somite stage with a resolution corresponding to each...

... neural crest-derived tissues of the second and third branchial arches, which normally arise from rhombomeres 4 and 6, respectively. We found that the hyoid bone in kr / kr animals exhibited an accessory process on the greater horn (a third arch structure) most easily explained by ectopic development...