Sökning: "lethal"

Visar resultat 6 - 10 av 383 avhandlingar innehållade ordet lethal.

  1. 6. Structure-function analysis of HAMLET (human alpha-lactalbumin made lethal to tumor cells)

    Författare :Jenny Pettersson; immunologi och glykobiologi - MIG Avdelningen för mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; alpha-lactalbumin HAMLET oleic acid protein folding tumor cell death;

    Sammanfattning : The human genome sequence encodes fewer proteins than expected, suggesting that one protein can have several functions and adjust their structure to meet different structural demands. Changes in tertiary structure have mostly been associated with disease and the most striking example is the prion protein, which changes from a mixed alpha-helical and beta-sheet conformation to the beta-sheet rich, disease causing iso-form. LÄS MER

  3. 7. Predator-prey interactions in freshwater systems: The importance of chemical communication

    Författare :Kajsa Åbjörnsson; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi; Ecology; Ekologi; Hydrobiology; trophic cascades; non-lethal effects; benefits; costs; heredity; predator experience; alarmsubstances; dietary cues; amphibian larvae; invertebrates; visibility; fish; behaviour; Predator-prey; chemical cues;

    Sammanfattning : Predator released chemical cues provide a valuable source of information to prey organisms that can be used to alter their behaviour in order to reduce predation risk. In this thesis, I have examined under what circumstances chemical cues may be used by prey, and if prey discriminate between different cues. LÄS MER

  4. 8. The Enteric Nervous System, Plasticity and Survival

    Författare :Katarina Sandgren; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurology; Nitric oxide synthase; Neuropeptides; Neuronal survival; Lethal spotted mice; Interstitial cells of Cajal; Hirschsprung s disease; Cell cultures; Enteric nervous system; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi;

    Sammanfattning : The thesis deals with plasticity in terms of neurotransmitter expression and survival of neurons in the adult enteric nervous system (ENS). Several motility disorders have been suggested to originate in developmental defects, neurodegeneration, or insufficient innervation by the ENS. LÄS MER

  5. 9. Superoxide dismutase : radiobiological significance : occurrence in human tissues, tumours and tumour cell-lines

    Författare :Gunnar Westman; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Superoxide dismutase; Radiation sensitivity; Diethyldithiocarbamate; Haemolysis; Catalase; Glutathione Peroxidase; Potential lethal damage;

    Sammanfattning : .... LÄS MER

  7. 10. Frequency changes and equilibria in experimental populations of Drosophila melanogaster with three lethal carrying fourth chromosomes

    Författare :Agneta Södergren; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; cage populations; fourth chromosome lethals; fitness components; equilibrium conditions; selective values;

    Sammanfattning : Populations where three different lethals are segregating as alleles have been analysed for the conditions of equilibrium and for the trends during elimination of one allele. Early and late selection as well as sexdependent and sexindependent selection has been taken into consideration. LÄS MER