... an embryonic process that played a fundamental step in the evolution of avian flight. In addition to its function in limb patterning, Shh is also involved in the epithelio-mesodermal interactions that drive feather formation ( Harris et al., 2002 , 2005 ; McKinnell et al., 2004 ). However, the observation...

... species and is posited to control avian germ cell formation. We show that TALENs mediate homology-directed repair of the DDX4 locus on the Z sex chromosome at high (8.1%) efficiencies. Large genetic deletions of 30 kb encompassing the entire DDX4 locus were also created using a single TALEN pair...

... Avian Quail The first hematopoietic stem/progenitor cells (HSPCs) emerge during the initial phase of embryonic development in the form of cell aggregates, designated hematopoietic clusters, that are intimately associated with endothelial cells (ECs) in the floor of the dorsal aorta...

... The authors declare no competing financial interests. 10 4 2013 © 2013. Published by The Company of Biologists Ltd 2013 Amniotes Avian Blastopore Gastrulation Mesoderm Primitive streak The mesoderm is one of the three principle germ layers and is formed during...

... Hindbrain Rhombomere Segmentation Avian Mouse During CNS development, the hindbrain is subdivided along its anterior-posterior (AP) axis into repetitive rhombomeres. Each rhombomere is a polyclonal cell lineage-restricted compartment of distinct genetic identity. The hindbrain develops...

...Petr Valasek; Raymond Macharia; Winfried L. Neuhuber; Joerg Wilting; David L. Becker; Ketan Patel The lymph heart is a sac-like structure on either side of avian tail. In some adult birds, it empties the lymph from the copulatory organ; however,during embryonic development, it is thought...

... in patterning craniofacial and forebrain structures,but an earlier role in anterior patterning is not well understood. We show that enzymes involved in synthesizing retinoids are expressed in the avian hypoblast and in tissues directly involved in head patterning, such as anterior definitive endoderm...

... ) 26 08 1998 © 1998 by Company of Biologists 1998 Enteric Neuron Glia Neural crest Avian Gut The embryonic origin of the neurons and glia that form the enteric nervous system (ENS), the intrinsic innervation of the gastrointestinal tract, has long been a subject of investigation...

... protein product is secreted from transfected cells and interacts with the avian VEGFR3 and VEGFR2. In situ hybridization shows that quail VEGF-C mRNA is strongly expressed in regions destined to be rich in lymphatic vessels, particularly the mesenteries, mesocardium and myotome, in the region surrounding...

...-mail: [email protected] ) 17 04 1997 © 1997 by Company of Biologists 1997 To investigate the cardiac myogenic potential of avian embryos prior to gastrulation, defined regions of EG&K stage XI-XIV quail or chick blastoderms consisting of epiblast and hypoblast ( Fig. 1 ) were...

.... ( 1986 ). Analysis of the early stages of trunk neural crest migration in avian embryos using monoclonal antibody HNK-1 . Dev. Biol . 115 , 44 – 55 . 10.1016/0012-1606(86)90226-5 Bronner-Fraser , M. ( 1988 ). Distribution and function of tenascin during cranial neural crest...

... © 1990 by Company of Biologists 1990 ontogeny immunocytochemistry process outgrowth pathway formation axonal growth pattern propriospinal spinal cord avian Previous studies, including two reports from our labora-tory, have shown that intersegmental projection neur-ons...