...-vacuolated epithelial-like cells). This cell-fate choice plays an important role in notochord structural integrity, because it determines the formation of vacuoles and the PBM. Furthermore, we found that the Mib-meditated Jagged-Notch signalling is involved in the muscle-patterning activity of the notochord...

... Muscle progenitors Muscle patterning The development of the complex pattern of the larval body wall muscles of Drosophila provides an excellent paradigm of how a final pattern is established through precise genetic control (reviewed by Bate, 1993 ; Baylies et al., 1998 ). Each...

... the intrinsic differentiation schedule of cranial musculature ( Noden et al., 1999 ). *Author for correspondence (e-mail: [email protected] ) 22 5 2002 © 2002. 2002 Myotome Muscle patterning Chick/quail Experimental embryology Somite Dermatome Competence Confocal microscopy...

...Charles P. Ordahl; Eli Berdougo; Sara J. Venters; Wilfred F. Denetclaw ABSTRACT The cellular and molecular mechanisms that govern early muscle patterning in vertebrate development are unknown. The earliest skeletal muscle to organize, the primary myotome of the epaxial domain, is a thin sheet...

.... Thus, in Hoxa1 mutants, which appear to have less second arch neural crest, the stylohyoideus does not segregate and remains part of the posterior belly of the digastric. We observed other muscle patterning defects that are potentially due to a primary neural crest defect. For example, seven out...

...Masakazu Yamamoto; Yoshihiro Gotoh; Koji Tamura; Mikiko Tanaka; Atsushi Kawakami; Hiroyuki Ide; Atsushi Kuroiwa ABSTRACT The limb muscle precursor cells migrate from the somites and congregate into the dorsal and ventral muscle masses in the limb bud. Complex muscle patterns are formed...

... (hypoglossal) muscles. This coherence of segmental crest populations explains how cranial skeleto-muscular pattern can be implemented and conserved despite evolutionary changes in the shapes of skeletal elements. 04 07 1996 © 1996 by Company of Biologists 1996 connective tissues muscle...

.... Taken together, this analysis suggests a central role for the cells at the segmental border in the induction of myotube directional migration and muscle patterning. Additional support for this conclusion comes from the analysis of the muscle phenotype in sr mutant embryos. The reporter gene expression...

... restricted pools of twist -expressing adepithelial cells in the larval imaginal disc in a similar fashion. We conclude that the fate restriction of myoblast pools in early development defines elements of the final adult muscle pattern. The fate restriction of myoblast cells may be a result of genetic...