Ampulla Morphogenesis in Anural and Urodele Molgulid Ascidians. (ascidians/ampulla morphogenesis/contraction rings)
نویسندگان
چکیده
منابع مشابه
Programmed cell death in the ascidian embryo: modulation by FoxA5 and Manx and roles in the evolution of larval development
Programmed cell death (PCD) has been discounted in the ascidian embryo because the descendants of every embryonic cell appear to be present in the tadpole larva. Here we show that apoptotic PCD is initiated in the epidermis and central nervous system (CNS) but not in the endoderm, mesenchyme, muscle, and notochord cells during embryogenesis in molgulid ascidians. However, the affected cells do ...
متن کاملNotochord Morphogenesis: A Prickly Subject for Ascidians
Orchestrated cell movements marshalled by proper cell polarity in the developing body axes are fundamental to the elongation of the notochord during chordate embryogenesis. A recent study shows that, in ascidians, the planar cell polarity gene prickle regulates sequential establishment of cell polarity during two phases of notochord morphogenesis.
متن کاملIdentification of a cytoskeletal protein localized in the myoplasm of ascidian eggs: localization is modified during anural development.
The myoplasm of ascidian eggs is a localized cytoskeletal domain that is segregated to presumptive larval tail muscle cells during embryonic development. We have identified a cytoskeletal protein recognized by a vertebrate neurofilament monoclonal antibody (NN18) which is concentrated in the myoplasm in eggs and embryos of a variety of ascidian species. The NN18 antigen is localized in the peri...
متن کاملThe multidimensionality of cell behaviors underlying morphogenesis: a case study in ascidians.
Databases where different types of information from different sources can be integrated, cross-referenced and interactively accessed are necessary for building a quantitative understanding of the molecular and cell biology intrinsic to the morphogenesis of an embryo. Tassy and colleagues recently reported the development of software tailor-made to perform such a task, along with the generation ...
متن کاملThe Pattern of Multiple Rings from Morphogenesis in Development
Under certain conditions the problem of morphogenesis in development and the problem of morphology in block copolymers may be reduced to one geometric problem. In two dimensions two new types of solutions are found. The first type of solution is a disconnected set of many components, each of which is close to a ring. The sizes and locations of the rings are precisely determined from the paramet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Development, Growth and Differentiation
سال: 1991
ISSN: 0012-1592,1440-169X
DOI: 10.1111/j.1440-169x.1991.00401.x