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blastula |
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blastulaEarly stage in the development of a fertilized egg, when the egg changes from a solid mass of cells (the morula) to a hollow ball of cells (the blastula), containing a fluid-filled cavity (the blastocoel). See also embryology. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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DMAE added to the embryos at the two-cell stage in concentrations of 100-400 [micro]M did not alter cleavage divisions or blastulation, but at very high concentrations (600-800 [micro]M), cleavages were inhibited (Figures 2 and 3). In these results, as in the studies with chlorpyrifos alone, sea urchin embryos were relatively insensitive during cleavage divisions and blastulation, but displayed high sensitivity at the mid-blastula 2 stage. |
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