The cell movements of gastrulation were analyzed in embryos of the spider Zygiella x-notata, using time-lapse video, cell tracing, and improved histology. Cells are internalized near the center of the germ disc in three distinct phases. First, cumulus mesenchyme cells ingress and migrate as a group beneath the superficial layer. Second, mass internalization through a blastopore yields a diffusely organized deep layer. Third, superficial cells accumulate at the center of the germ disc to form the caudal bud. The floor is internalized, and the caudal bud moves over the nascent dorsal field to form the caudal lobe. This pattern of gastrulation differs from the canonical pattern described in the historical literature: (1) the cumulus of Z. x-no...
Studies in vertebrate and invertebrate model organisms on the molecular basis of primordial germ cel...
Thesis (Ph. D.)--University of Washington, 2006.Metamorphosis allows insects to possess radically di...
In a developing embryo, the spatial distribution of a signaling molecule, or a morphogen gra-dient, ...
Background: Determination of the embryonic body axes is a crucial developmental process in all anima...
How animals develop the complex structures and morphologies that result in diversification and speci...
Abstract Background The spider Cupiennius salei (Keyserling 1877) has become an important study orga...
Most arthropods generate their posterior bodies by adding segments periodically, as the embryo grows...
In Drosophila melanogaster, the germband forms directly on the egg surface and solely consists of em...
In insects, the fertilizedeggundergoesaseriesof rapidnuclear divisions before the syncytial blastode...
In the animal kingdom, gastrulation, the process by which the primary germ layers are formed involve...
Cell migration is a fundamental component during the development of most multicellular organisms. In...
In Drosophila melanogaster, the germband forms directly on the egg surface and solely consists of em...
Vertebrate embryogenesis entails an exquisitely coordinated combination of cell proliferation, fate ...
We studied the anatomy and cytology of the midgut gland (MGl) of the common spider crab Maja brachyd...
12 pages, 7 figures.-- Availability of data and materials: Data are available from the corresponding...
Studies in vertebrate and invertebrate model organisms on the molecular basis of primordial germ cel...
Thesis (Ph. D.)--University of Washington, 2006.Metamorphosis allows insects to possess radically di...
In a developing embryo, the spatial distribution of a signaling molecule, or a morphogen gra-dient, ...
Background: Determination of the embryonic body axes is a crucial developmental process in all anima...
How animals develop the complex structures and morphologies that result in diversification and speci...
Abstract Background The spider Cupiennius salei (Keyserling 1877) has become an important study orga...
Most arthropods generate their posterior bodies by adding segments periodically, as the embryo grows...
In Drosophila melanogaster, the germband forms directly on the egg surface and solely consists of em...
In insects, the fertilizedeggundergoesaseriesof rapidnuclear divisions before the syncytial blastode...
In the animal kingdom, gastrulation, the process by which the primary germ layers are formed involve...
Cell migration is a fundamental component during the development of most multicellular organisms. In...
In Drosophila melanogaster, the germband forms directly on the egg surface and solely consists of em...
Vertebrate embryogenesis entails an exquisitely coordinated combination of cell proliferation, fate ...
We studied the anatomy and cytology of the midgut gland (MGl) of the common spider crab Maja brachyd...
12 pages, 7 figures.-- Availability of data and materials: Data are available from the corresponding...
Studies in vertebrate and invertebrate model organisms on the molecular basis of primordial germ cel...
Thesis (Ph. D.)--University of Washington, 2006.Metamorphosis allows insects to possess radically di...
In a developing embryo, the spatial distribution of a signaling molecule, or a morphogen gra-dient, ...