- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 201 to 210 of 289 (0.015 seconds)| 201 |
A freeze-fracture replication study of developing tissues in early chick embryoStolinski, Christopher January 1979 (has links)
No description available.
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| 202 |
An investigation of nuclear transplantation in the mammalian eggBromhall, J. D. January 1975 (has links)
No description available.
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| 203 |
Investigation of patterning in early mouse developmentLabrousse, Claire A. January 2007 (has links)
Re-patterning is visible and well understood in some species. However, controversy remains as to whether there is pre-patterning in the mouse and if so when and how it is established. In this thesis I looked in detail at the first c1~avage division. FirstIy, the role of the sperm was studied. Marking the position of the anterior end of ft~e sperm tail with oil drops in the zona pellllcida provided evidence against a relation i~tween the sperm and the first cleavage. Embedding the zygotes in alginate with a .fertilisation cone present concurred with the oil marking result in rejecting a role for :~perm in defining the plane offirst cleavage. ' ' :;§econdly, time-lapse recording of the first cell cycle allowed observation of movement :pfpronuclei, polar body and zygote inside its zona pellllcida. Pronuclei were found to fOllow two patterns of migration: they either migrated individually directly to the ;§p.tre of the zygote, or, the male joined the female and both migrated together to the #ntre. A potential effect of attraction of forming pronuclei was discovered which need ~o.:be further investigated. The polar body was found to be frequently associated with IecIeavage plane; it was also observed that nearly all the polar bodies presented some ;a,iformation, elongation of the full body or just some localised extension. The zygote t'as found not to rotate extensively within its zona pellllcida, and the few cases where fertilisation cone was observed agreed with previous results where sperm was not associated with cleavage plane. -Filially the role of cell contact at cleavage stages was investigated. Cell contact was Thu.nd not to influence the formation of blastocyst as might be expected, but still to interfere with normal development as many more abnormalities were found in cases Where cell contacts were removed earlier on.
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| 204 |
Cellular Interactions in Early Developing Mammalian EmbryosKelly, S. J. January 1975 (has links)
No description available.
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| 205 |
Prdm1/Blimp-1 Alternative Promoter usage during IVIouse Development and Plasma Cell DifferentiationMorgan, Marc Alard Jonathan January 2009 (has links)
No description available.
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| 206 |
Studies on a cellular interaction in early mammalian developmentCopp, A. J. January 1978 (has links)
No description available.
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| 207 |
A Study of the Adhesiveness of Cells from Adjacent Tissues of the Embryonic Chick EyeBuultjens, T. E. J. January 1976 (has links)
No description available.
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| 208 |
Ultrastructural and Cytochemical Studies on Flagellates with Special Reference to the Function of Lysosomes in these OrganismsEyden, B. P. January 1974 (has links)
No description available.
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| 209 |
Interactions of Embryonic with Neoplastic CellsMatthopoulos, D. January 1975 (has links)
No description available.
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| 210 |
Biology and Bionomics in Scotland of Anthocoris gallarumulmi deg. and its two Principal Prey Species, Eriosoma ulmi (L) and Eriosoma Patchae Börner & Blunck and their InterrelationshipsParker, N. J. B. January 1976 (has links)
No description available.
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