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  • About
  • 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.
1

In vitro studies on human first trimester forebrain cells : differentiation and interactions with immunoregulating molecules /

Mousa, Alyaa Mohammed Ali, January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 5 uppsatser.
2

Purification and Characterization of a Differentiation Factor From Rat Lung Conditioned Medium

Ansari, Naser A. (Naser Awni) 05 1900 (has links)
A Differentiation Factor (DF) was purified from rat lung conditioned medium by a four-steps procedure. The DF has a molecular weight of 27000, and an isoelectric point of 4.70. Although DF is stable up to 60°C, it is sensitive to digestion by trypsin, chymotrypsin and subtilisin. DF forms granulocyte colonies in soft agar. Studies using anti-NRK CSF antibody demonstrated that DF is distinct from GM-CSF.
3

Evaluation of using all-trans-retinoic acid to differentiate human neuroblastoma SH-SY5Y cells in neurodegeneration research

Lau, Kwok-wai, 劉國威 January 2007 (has links)
published_or_final_version / abstract / Anatomy / Master / Master of Philosophy
4

The control of differential gene expression during sporulation in Bacillus subtilis

Illing, Nicola January 1990 (has links)
No description available.
5

Chromosome studies in elephantulus with special reference to the allocyclic behaviour of the sex chromosomes and the structure of heterochtomatin

Brenner, Sydney January 1947 (has links)
Thesis presented in fulfilment of the requirements far the degree of Master of Science in the University of the Witwatersrand. / Every organism, whether it he plant or animal, worm or man, propagates Itself with a definable degree of constancy* Such constancy cannot be entirely related to the ever-changing external environment; it becomes,of necessity, mainly an inherent function of the organism itself* Somewhere in the organism, there exists a system which determines, controls, or regulates the visible expressions of organlsmal constancy. / WHSLYP2017
6

Effect of multiplicity of infection on gene expression.

January 1978 (has links)
Thesis (M. Phil.)--Chinese University of Hong Kong. / Bibliography: leaves 158-185.
7

Erythroleukemic cell differentiation factor (EDF) : biochemical, cloning, molecular structure, and functional studies /

Chan, Sze-wing, Scarlet. January 2000 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 196-221).
8

Roles of the JAK pathway in follicular patterning of drosophila

Xi, Rongwen. January 2002 (has links) (PDF)
Thesis (Ph. D.)--University of Kentucky, 2002. / Title from document title page. Document formatted into pages; contains vii, 83 p. : ill. Includes abstract. Includes bibliographical references (p. 73-82).
9

Quantitative characterization of mouse embryonic stem cell state transition

Lu, Xibin, 盧希彬 January 2014 (has links)
abstract / Biochemistry / Doctoral / Doctor of Philosophy
10

Functional characterization of the split SET and MYND domain-containing methyltransferases, Smyd2 & Smyd3

Brown, Mark Alan, 1975- 28 August 2008 (has links)
Cell proliferation and differentiation are coordinated by synchronized patterns of gene expression. The regulation of these patterns is achieved, in part, through epigenetic mechanisms that affect the nature of DNA packaging into chromatin. Specifically, post-translational modifications to histone tails impact the structural dynamics of nucleosomes, thereby affecting DNA accessibility to transcriptional complexes. Accumulating evidence suggests that transcriptional regulators facilitate these alterations, resulting in altered local gene transcription. Thus, the structural interpretations of histone modifications are responsible for the establishment and maintenance of discrete programs of gene expression that ultimately correspond with distinct biological outcomes. Most histone lysine methyltransferases catalyze methyl transfer by way of the SET domain, a module encoded within many proteins that regulate diverse processes, including some critical for development and proper progression of the cell cycle. One such group of proteins, the SET and MYND domain (Smyd) family have been demonstrated to be direct regulators of tumorigenesis and essential developmental processes. Presented here is a functional characterization of two members of that family, Smyd2 and Smyd3. Smyd2 is identified as a member of the Smyd family and reported here to possess SET-dependent histone H3, lysine 36-specific methyltransferase activity. Smyd2 specifically associates with the Sin3A histone deacetylase complex, suggesting a link between two independent chromatin modification activities. Finally, over-expression of Smyd2 in fibroblasts is shown to significantly suppress their rate of growth. It is therefore proposed that Smyd2-mediated chromatin modifications regulate specific gene expression, thereby having important implications for normal and neoplastic cell proliferation. Aberrant expression of the histone H3-lysine 4-specific methyltransferase, Smyd3, has been implicated in colorectal, hepatocellular, and breast cell carcinogenesis. Here, Smyd3 is also shown to target histone H4, lysine 20 (H4K20). However, over-expression of Smyd3 in fibroblasts results in global reduction of trimethylation at H4K20 and this is accompanied by a striking increase in cell proliferation. As the methylation of H3K4 and H4K20 are normally associated with conflicting biological functions, I predict that these differential activities of Smyd3 are manifest under spatially and/or temporally distinct conditions, in the presence of different associating complexes, thereby resulting in effects that may be antagonistic of one another. / text

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