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A computer simulation of geometrical configurations during cell division.
TLDR
An attempt was made to model with a computer simulation the way in which cell number increases in the blastular wall of the starfish, Asterina pectinifera, and the simulation proves valid for describing changes of polygonal patterns of cell sheets including dividing cells. Expand
Studies on dwarf larvae developed from isolated blastomeres of the starfish. Asterina pectinifera.
Not only a whole denuded egg, but also blastomeres isolated from 2-, 4- and 8-cell starfish embryos developed into morphologically normal, but dwarf bipinnariae, the sizes of which were roughlyExpand
Defense system by mesenchyme cells in bipinnaria larvae of the starfish, Asterina pectinifera.
TLDR
The results suggest that mesenchyme cells are equipped with a spectrum of abilities to engage in a defense system in starfish larva. Expand
Paracellular, transepithelial permeation of macromolecules in the body wall epithelium of starfish embryos
TLDR
Micropreciptiates of LaCl3 were found, in thin sections of embryos treated with glycine, to lie along the intercelluar spaces, showing, although indirectly, that macromolecules flow through this pathway instead of a transcellular one. Expand
Reconstruction of bipinnaria larvae from dissociated embryonic cells of the starfish, Asterina pectinifera.
TLDR
Morphogenetic events of reconstruction are discussed in relation to the normal course of starfish development and to the reconstruction process of the sea urchin. Expand
Selective inhibition of gastrulation in the starfish embryo by albuside B, an inosine analogue
TLDR
The selectivity of the inhibition shows that albuside B may be a useful tool for studying the mechanisms of mesendoderm differentiation, and the effective period of the treatment is limited from 4 to 6 h after fertilization. Expand
Primary Culture of Mesodermal and Endodermal Cells of the Starfish Embryo
TLDR
Results suggest that there is an order of resistibility to 0.6 M glycine treatment among cells of the three germ layers, i. Expand
Fibrous component of the blastocoelic extracellular matrix shapes epithelia in concert with mesenchyme cells in starfish embryos
TLDR
It is proposed that 4H11 fibers play direct roles in the morphogenesis of starfish embryos by providing a dynamic scaffold not only for the mesenchyme cells but also for the epithelial cells. Expand
A comparative study on the fusogenic nature of echinoderm and nonechinoderm phagocytes in vitro
TLDR
The extraordinarily fusogenic nature of echinoderm phagocyte is discussed in relation to the calcareous body wall structure of the echinoderms. Expand
A “NORMAL” DEVELOPMENT OF DENUDED EGGS OF THE STARFISH, ASTERINA PECTINIFERA *
Experimental conditions that allow “normal” development of starfish eggs stripped of the fertilization membrane are reported in this paper. Four kinds of intercellular relation are distinguishedExpand
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