Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Cleavage divisions"”.
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Oogenesis of Ostertagia circumcincta, a parasitic nematode of the abomasum of sheep
… from the primordial stage through the first cleavage division. 1. The primordial germ cells arise at the tip of the germ tube which lies just posterior to the oesophagus. 2. The period of growth following each stage in the development of the egg is accompanied by a fragmentation of the …
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Organization principles of the early Drosophila embryo
… melanogaster embryo goes through 13 rapid cleavage divisions. Followed by axial expansion during nuclear cycles 4-6, the nuclei collectively migrate to the cortex through cycles 7-9, known as cortical migration. In this study, using light sheet microscopy and quantitative analysis, we track …
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Mechanisms behind the fate of early chromosomal and transcriptional heterogeneities in the mouse embryo
… A high incidence of aneuploidy in the early cleavage divisions is considered the principal cause for low human fecundity and developmental defects. However, there is a dramatic decline in the prevalence of aneuploidy as gestation progresses. To understand the fate of aneuploid cells, a mouse …
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Morphological Remodeling of the Endoplasmic Reticulum During Mitosis and Its Influence on the Integrity of the Spindle Apparatus
… in morphology during cell division, with mitotic divisions requiring a massive remodeling of various membranous organelles such as the nuclear envelope and Golgi. However, whether changes in ER behaviors modulate mitotic events is less clear. The rapid cleavage divisions in the early …
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Protein phosphorylation and cell diversification in the mouse early embryo.
… groups of embryos precisely to successive cleavage divisions prior to labelling, changes in phosphoprotein profile associated with passage through the 4-cell and 8-cell stages have been described. While many of the 32P-labelled phosphoproteins detectable after electrophoresis in one or two …