...Gil Jung Kim; Gaku Kumano; Hiroki Nishida Asymmetric cell division plays a fundamental role in generating various types of embryonic cell. In ascidian embryos, asymmetric cell divisions occur in the vegetal hemisphere in a manner similar to those found in Caenorhabditis elegans . Early divisions...

... in the movement of postplasmic/PEM RNAs via relocalization of cER. The CAB also shrank. These results suggest that Hr-POPK-1 plays roles in concentration and positioning of the cER, as well as in the concentration of CAB materials, such as putative germ plasm, in the posterior blastomeres. Ascidian embryo...

.../bioclip.html 6 8 2003 © 2003. 2003 Ascidian embryo Maternal mRNA Egg cortex RNA localization Endoplasmic reticulum Localization of specific mRNAs is essential for cell polarity, asymmetric division and differentiation in several cells, including yeast, fibroblasts,neurons...

... for this in ascidian embryos. In vertebrate embryos, FGF and TGFβ superfamily growth factors have been shown to be required for mesoderm formation. Both types of molecules can induce mesoderm in vitro ( Slack, 1994 ), but the inducing signals emitted from the endoderm are likely to be TGFβ of the activin/Nodal...

... of induction of mesoderm in amphibian embryos. 20 01 1990 © 1990 by Company of Biologists 1990 ascidian embryo muscle differentiation developmental autonomy determination cell interaction The process of ascidian embryogenesis is regarded as an example of typical mosaic...

...Takahito Nishikata; Izumi Mita-Miyazawa; Takuya Deno; Noriyuki Satoh ABSTRACT The myoplasm of Ciona intestinalis eggs, believed to contain cytoplasmic determinants responsible for muscle cell differentiation in ascidian embryos, emits weak pale-blue autonomous fluorescence. Utilizing this feature...

...Takahito Nishikata; Izumi Mita-Miyazawa; Takuya Deno; Nori Yuki Satoh ABSTRACT Utilizing a muscle-specific monoclonal antibody (Mu-2) as a probe, we analysed developmental mechanisms involved in muscle cell differentiation in ascidian embryos. The antigen recognized by Mu-2 was a single polypeptide...

...-specific proteins has been critically evaluated based on evidence from studies of endodermal AP and muscle actin expression in ascidian embryos. Although the independence of AP expression from embryonic gene activity is suggested by its insensitivity to inhibitors of transcription, this hypothesis...

... Ascidian embryo cell rearrangements cell shape changes intracellular vacuoles video time lapse notochord Several cell behaviours considered to be important in forming embryonic structures are displayed during formation of the notochord. Cell proliferation, growth, migration, rearrangement...