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Engineering Web: macromeres
1 - 10 of 76
A micromere induction signal is activated by beta-catenin and acts through notch...
Signaling-competent micromeres fail to induce SMCs if macromeres express dominant-negative Notch. Expression of an activated Notch construct in macromeres rescues SMC specification in the absence of ...
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ANNELIDA
Subsequent divisions are of the spiral type (Allen, 1953), the four micromeres of the eight-cell stage being polar in position and somewhat smaller than the macromeres. Within three hours after ...
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LvNotch signaling plays a dual role in regulating the position of the ectoderm-...
DiI labeling and lineaging of mesomeres and macromeres. Individual mesomeres and macromeres in 16-cell-stage embryos were labeled iontophoretically with DiI (5 mg/ml in ethanol; Molecular Probes) (see ...
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HSM41
... mesomeres and macromeres. The latter signal may have resulted from contamination of this fraction by micromeres at the time of isolation, or from trans-differentiation of macromeres into spicule-forming ...
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Expression pattern of Brachyury in the mollusc Patella vulgata suggests a ...
Animal is to the top. Two of the four vegetal cells (macromeres) can be seen (3M). During this period, the four macromeres invade the blastocoel, and compete for contacting the animal micromeres that ...
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CTENOPHORA
The next cleavage is oblique, producing four large central cells and four small lateral cells which migrate towards the animal pole to form a flat plate of eight cells. These eight large "macromeres" ...
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Time-lapse and Electron Microscopic Studies of Sea Urchin Micromeres.
The open cytoplasmic connection which we have discovered between micromeres and macromeres during interphase represents a rapidly working mechanism for transport between cells. The cytoplasmic ...
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MOLLUSCA
The cells of the first quartet of micromeres, given off by the dexiotropic third cleavage, are distinguishable from the larger macromeres. Further divisions follow the regular pattern of spiral ...
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LvDelta is a mesoderm-inducing signal in the sea urchin embryo and can endow ...
A-C) Micromeres containing LvDelta morpholino and a lineage tracer were combined with normal macromeres and mesomeres. (A) Diagram of the experimental design. The resulting embryos have few pigment ...
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Sea Urchin SEM
... embryo at the 16-cell stage.The four large macromeres are behind the four small micromeres. The eight mesomeres are behind the macromeres. Remnants of the fertilization envelope can be seen attached ...
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