• genes
  • These studies provide genetic evidence for an essential function of a homeodomain protein in ß-catenin-mediated induction of the dorsal gastrula organizer and place boz at the top of a hierarchy of zygotic genes specifying the dorsal midline of a vertebrate embryo. (zfin.org)
  • Hox genes are a group of related genes that control the body plan of an embryo along the head-tail axis. (wikipedia.org)
  • Organogenesis
  • During organogenesis (around the fourth week in human embryos), the visceral region of the mesoderm, the splanchnopleura, transforms into distinct structures consisting of the dorsal aorta, genital ridges and mesonephros. (wikipedia.org)
  • anterior
  • It contains the dorsal aorta, genital ridges and mesonephros and lies between the notochord and the somatic mesoderm, extending from the umbilicus to the anterior limb bud of the embryo. (wikipedia.org)
  • rapidly
  • Tracing individual cell positions can rapidly become a large-scale problem because cell numbers often grow exponentially in the early embryo. (biomedsearch.com)
  • This is the same case in human embryos, where they are first detected at day 27 in the aorta gonad mesonephros region, expand rapidly at day 35, then disappear at day 40. (wikipedia.org)
  • Two species of fish, zebrafish and medaka, are most commonly modified because they have optically clear chorions (shells), develop rapidly, the 1-cell embryo is easy to see and micro-inject with transgenic DNA, and zebrafish have the capability of regenerating their organ tissues. (wikipedia.org)
  • brain
  • At least two other more polar (presumably richer in sialic acid) bands are often visible under XI, both in embryos and in brain and spinal cord tissues of adult Xenopus. (biomedsearch.com)
  • development
  • This paper details the advantages of using C. elegans to investigate features of the nucleolus during the organism's development by following dynamic changes in fibrillarin (FIB-1) in the cells of early embryos and aged worms. (nih.gov)
  • In the course of the development of the embryo, the incus and malleus arise from the same first pharyngeal arch as the mandible and maxilla, and are served by mandibular and maxillary division of the trigeminal nerve. (wikipedia.org)
  • The early embryo requires critical development in the Fallopian tube. (wikipedia.org)
  • cell
  • This study demonstrates that heterogeneity in surface tension results in significant deviations of cell behavior compared to simple soap bubble models, and thus must be taken into consideration in understanding cell shape within embryos. (biomedsearch.com)
  • The cell-cell contact surfaces in developing embryos are often curved like arcs. (biomedsearch.com)
  • Those of the two-cell stage embryos of C. elegans exhibit this pattern. (biomedsearch.com)
  • Multi-position photoactivation and multi-time acquisition for large-scale cell tracing in avian embryos. (biomedsearch.com)
  • A typical approach consists of fluorescently marking small numbers of cells within a large number of embryos, followed by comprehensive three-dimensional static or time-lapse imaging to map cell positions. (biomedsearch.com)
  • The effectiveness of the antioxidants to protect the embryos from ethanol-induced cell death was also evaluated. (zfin.org)
  • Furthermore, isolated organ cultures of the AGM from mice embryos can autonomously initiate hematopoietic stem cell activity, without influence from the yolk sac or liver. (wikipedia.org)
  • Expression
  • In llb embryos, the outgrowth of the peripheral axons of RB neurons was selectively impaired, which correlated with down-regulation of the expression of dihydropyrimidinase-like 3 (dpysl3, also known as collapsin response mediator protein 4, crmp4). (zfin.org)
  • SOX1 expression is restricted to neuroectoderm by proliferating progenitor cells in the tetrapod embryo. (wikipedia.org)
  • control
  • The percentage of fluorescence emitted by the injected embryos was determined by comparison to negative control embryos (those injected with scrambled miRNA). (nih.gov)
  • region
  • The AGM region is derived from the mesoderm layer of the embryo. (wikipedia.org)
  • In the embryo, the nasal region develops from neural crest cells which start their migration down to the face during the fourth week of gestation. (wikipedia.org)
  • shape
  • We are also interested in morphogenesis that provides shape to the developing embryo. (yale.edu)
  • determine
  • To determine if oxidative stress underlies cardiovascular dysfunction, embryos were co-exposed to ethanol and several antioxidants. (zfin.org)