Sökning: "early embryonic development"

Visar resultat 1 - 5 av 183 avhandlingar innehållade orden early embryonic development.

  1. 1. Heparan Sulfate and Development : A Study of NDST Deficient Mice and Embryonic Stem Cells

    Författare :Katarina Holmborn; Lena Kjellén; Erik Forsberg; Catherine L. Merry; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell and molecular biology; heparan sulfate; proteoglycan; biosynthesis; N-deacetylase N-sulfotransferase; NDST; gene targeting; embryonic development; lung development; mast cells; Cell- och molekylärbiologi;

    Sammanfattning : Heparan sulfate (HS) proteoglycans consist of sulfated HS chains covalently bound to core proteins. They are ubiquitously expressed, on the cell surface and in the extracellular matrix, throughout the body. LÄS MER

  3. 2. Genetic Sex Differences in Early Human Neuronal Development : An Investigation in Embryo Tissue and Embryonic Stem Cells

    Författare :Philipp Pottmeier; Elena Jazin; Armin Raznahan; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sex chromosome; gametolog; x y homolog; male; female; sex differences; sex bias; embryonic stem cells; neurodevelopment; neuronal differentiation; neural stem cells; genetics; neurodevelopmental disorders; Biology with specialization in Evolutionary Organismal Biology; Biologi med inriktning mot evolutionär organismbiologi; Neuroscience; Neurovetenskap; Medicinsk genetik; Medical Genetics;

    Sammanfattning : Sex differences in the human body affect many different organs and tissues, some of them have an effect on the human brain and its development. In the developing nervous system, sex differences can bias the number or functionality of neurons, glial cells or synapses. As a result, neural networks might develop with a sex-specific bias. LÄS MER

  4. 3. Neuronal Development in the Embryonic Retina : Focus on the Characterization, Generation and Development of Horizontal Cell Subtypes

    Författare :Per-Henrik Edqvist; Finn Hallböök; Steven McLoon; Uppsala universitet; []
    Nyckelord :Neurosciences; Activin; Chick; Follistatin; Interneuron; Isl1; Lim1; Migration; Neurogenesis; Prox1; Transcription factor; Neurovetenskap;

    Sammanfattning : Horizontal cells are retinal interneurons that modulate the output from photoreceptors. Two horizontal cell (HC) subtypes are commonly identified in the vertebrate retina: axon-bearing and axon-less HCs. LÄS MER

  5. 4. Mitochondrial differentiation during the early development of the amphibian embryo

    Författare :Lennart Nelson; Barbara Cannon; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amphibia; Xenopus laevis; Ambystoma mexicanum; mitochondria; differentiation; enzymes; carriers; oxidation; development; Zoophysiology; zoofysiologi;

    Sammanfattning : Mitochondria from Xenopus laevis and Ambystoma mexica- num embryos between fertilization and the beginning of feeding were studied: the former with respect to metabolic behaviour, enzyme pattern and carrier activity, and the latter with respect to morphological parameters.The metabolic behaviour of mitochondria was studied by assessing the rates of oxygen uptake in presence of various substrates. LÄS MER

  7. 5. Roles of Notch signalling in early embryonic development

    Författare :Heather Main; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Metazoan embryonic development requires a complex interplay of morphological processes coordinated with self-renewal and differentiation to correctly specify and maintain body cell types in the correct location. Notch signalling is a metazoan specific arbiter of cell fate decision processes, known to control lateral inhibition and asymmetric cell division processes throughout the metazoa and in the development of all metazoan organs. LÄS MER