Search for dissertations about: "area fraction"

Showing result 11 - 15 of 243 swedish dissertations containing the words area fraction.

  2. 11. Phagocyte-induced apoptosis in natural killer cells and T cells. Role of reactive oxygen species and regulation by histamine

    Author : Markus Hansson; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Malignant tumors frequently contain an infiltrate of leukocytes, usually cells of the monocyte/macrophage lineage and lymphocytes with anti-tumor activity such as natural killer (NK) cells and T cells. Clinical and experimental data suggest that monocytes/macrophages in tumors inhibit functions of adjacent NK cells/T cells and thereby suppress lymphocyte-dependent anti-tumor immunity. READ MORE

  4. 12. Genomic Variation and Evolution of HERV-H and other Endogenous Retroviruses (ERVs)

    Author : Patric Jern; Jonas Blomberg; Michael Tristem; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Microbiology; Endogenous Retrovirus ERV ; HERV-H; Phylogeny; Evolution; Sequence Variation; Polymorphism; Recent Integrations; Horizontal Transfer; Master Elements; Taxonomy; Mikrobiologi; Microbiology; immunology; infectious diseases; Mikrobiologi; immunologi; infektionssjukdomar;

    Abstract : An exogenous retrovirus (XRV) that integrates into a germ cell may be inherited as a Mendelian gene; it becomes an endogenous retrovirus (ERV). The human genome consists of up to 8% HERVs. The gammaretroviral (ERV class I) HERV-H, with 926 members, is the largest ERV group. READ MORE

  5. 13. Studies of immune responses to cell surface proteins of Helicobacter pylori and Borrelia burgdorferi by enzyme immunoassay and immunoblotting

    Author : Ingrid Nilsson; Avdelningen för medicinsk mikrobiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mikrobiologi; mycology; virology; B. burgdorferi; H.pylori; cell surface proteins; gel-electrophoresis; enzyme immunoassay; Western immunoblotting; bacteriology; Microbiology; bakteriologi; virologi; mykologi;

    Abstract : Helicobacter pylori and Borrelia burgdorferi s.l. can cause chronic infections by evading the immune system. These two human pathogens express a number of immunogenic cell surface proteins. READ MORE

  6. 14. Studies of T- and B-cells for the generation of human antigen specific antibodies

    Author : Eva Andersson; Institutionen för immunteknologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; germinal center; CD4 CD57 T cells; mucin 1; in vitro immunization; human class switched antibodies; Biotechnology; Bioteknik;

    Abstract : Human antibodies generated in vitro may be highly valuable for diagnostic and therapeutic purposes. For a long time most human antibodies produced in vitro have been of the IgM isotype with rather low affinities. In this thesis a method for production of IgG switched antigen-specific human antibodies is presented. READ MORE

  7. 15. Factors influencing the biogeography of bacteria in fresh waters - a metacommunity approach

    Author : Jürg Brendan Logue; Eva S. Lindström; Silke Langenheder; Lars Tranvik; Byron Crump; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bacteria; diversity; richness; community composition; dispersal; metacommunity; fresh water; biogeography; Freshwater ecology; Limnisk ekologi; Microbiology; Mikrobiologi; Biologi med inriktning mot limnologi; Biology with specialization in Limnology;

    Abstract : One of ecology’s primary goals is to comprehend biodiversity and its patterns of distribution over space and time. Since microorganisms play a pivotal role in key ecological processes, the diversity of microbial communities may have important implications for the stability and functioning of Earth’s ecosystems. READ MORE