Sökning: "Utvecklingsbiologi"

Visar resultat 1 - 5 av 201 avhandlingar innehållade ordet Utvecklingsbiologi.

  1. 1. Growth and Behaviour Epigenetic and Genetic Factors Involved in Hybrid Dysgenesis

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Wei Shi; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Interspecies hybridization; hybrid dysgenesis effect; speciation; genomic imprinting; epigenetics; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi;

    Sammanfattning : In mammals, the most frequently observed hybrid dysgenesis effects are growth disturbances and male sterility. Profound defects in placental development have been described and our work on hybrids in genus Mus has demonstrated putative hybrid dysgenesis effects that lead to defects in lipid homeostasis and maternal behavior. LÄS MER

  2. 2. CTCF and Epigenetic Regulation of the H19/Igf2 Locus

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Vinod Pant; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Imprinting; Chromatin; H19; Igf2; CTCF; Insulator; methylation; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi;

    Sammanfattning : An overall coordination between the expressions of genes is required for the proper development of an individual. Although most genes are expressed from both the constituent alleles of the genome, a small subset of autosomal genes are preferentially expressed from only one of the parental alleles, a phenomenon known as genomic imprinting. LÄS MER

  3. 3. Immunological aspects of maternal-foetal interactions in mice

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Marie Arvola; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Neonatal mice; milk; placenta; fetal rejection; IgG; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; Developmental Biology; miljömedicinsk utvecklingsbiologi;

    Sammanfattning : Mammalian pregnancy is an immunological paradox. The foetus, which expresses both paternal and maternal cell-surface molecules, has to be protected from rejection by the maternal immune system. At the same time, the mother has to have an efficient immune defence and must provide her offspring with antibodies. LÄS MER

  4. 4. A Comparative Study of Head Development in Mexican Axolotl and Australian Lungfish: Cell Migration, Cell Fate and Morphogenesis

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Rolf Ericsson; Rolf Ohlsson; Graham Budd; Lennart Olsson; Per Ahlberg; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Head development; axolotl; lungfish; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; Developmental Biology; miljömedicinsk utvecklingsbiologi;

    Sammanfattning : The development of the vertebrate head is a complex process involving interactions between a multitude of cell types and tissues. This thesis describes the development of the cranial neural crest and of the visceral arch muscles in the head of two species. LÄS MER

  5. 5. Epigenetic Regulation of the H19 Chromatin Insulator in Development and Disease

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Claes Holmgren; Rolf Ohlsson; Tomas Ekstöm; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; Developmental Biology; Miljömedicinsk utvecklingsbiologi;

    Sammanfattning : The coordinated regulation of gene expression must be tightly controlled for normal development to occur. In mammals, this issue is further complicated by the requirement of both the maternal and paternal genomes for normal development, reflecting the fact that a subset of genes are monoallelically expressed depending on parental inheritance, a phenomenon known as genomic imprinting. LÄS MER