... genotypes). At T26, we observed differentiated neural crest-derived melanocytes in mutants, but these embryos ( n =8/10) failed to properly position melanocytes in the anterior head and along the dorsal pharynx ( Fig. 9 A,B). Mutant embryos ( n =7/10) also had severely disorganized cranial ganglia...

...Alexei Nechiporuk; Tor Linbo; Kenneth D. Poss; David W. Raible In all vertebrates, the neurogenic placodes are transient ectodermal thickenings that give rise to sensory neurons of the cranial ganglia. Epibranchial (EB) placodes generate neurons of the distal facial,glossopharyngeal and vagal...

... implicated in several disorders affecting craniofacial development in humans. We show that Msx1 / 2 mutants exhibit profound deficiencies in the development of structures derived from the cranial and cardiac neural crest. These include hypoplastic and mispatterned cranial ganglia, dysmorphogenesis...

... the placode territory becomes confined to the head, and how neural crest and placode fates diversify. * Author for correspondence (e-mail: [email protected] ) 6 7 2005 ©2005. 2005 Chick Quail Placode Lens Inner ear Olfactory epithelium Cranial ganglia The sensory...

...-mail: [email protected] ) 22 4 2005 ©2005. 2005 Fgf3 Foxi1 Epibranchial placodes Cranial ganglia Endoderm Pharyngeal pouches Placode induction Neurogenesis Neurogenic cranial placodes are transient ectodermal thickenings that form at the border of the neural plate...

... of the peripheral nervous system in the trunk. This first group of cells is followed by a second wave of migration supplying cells to cranial ganglia in the head and pigment cells in the trunk( Kelsh and Raible, 2002 ). During migration, cells continue to proliferate and begin to express genes defining the cell...

... Institute of Marseille, LGPD-UMR CNRS 6545, Campus de Luminy, Case 907, 13288 Marseille Cedex 9, France ¶ Author for correspondence (e-mail: [email protected] ) 11 01 1999 03 03 1999 © 1999 by Company of Biologists 1999 Pax-3 Induction Trigeminal Placode Cranial...

... are unaffected by 10 7 M RA, as are the cranial midbrain and forebrain: 10 −7 M RA also affects the development of cranial ganglia, principally the Vth, anterior lateral line and VUIth ganglia, suggesting that RA affects normal development of the cranial neural crest. Effects of RA at stages immediately prior...

... branchial arches mouse embryology head development cranial ganglia neural plate hindbrain The development of the mesoderm of the vertebrate head involves different mechanisms from that of the trunk. These differences may be related to the presence of a tissue, the neural crest, which is able...

... in situ hybridization chicken embryo neural crest placode cranial ganglia β -nerve growth factor (NGF) is a target-derived protein that is essential for development and maintenance of sympathetic and a subset of sensory peripheral neurons (see Levi-Montalcini and Angeletti, 1968 ; Thoenen...