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  • 1
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 55 (1999), S. 260-262 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A truncated soluble form of the murine class I major histocompatibility antigen complex H–2Dd was cloned using an Escherichia coli based system. It was expressed, refolded in vitro and crystallized in a complex with murine β2 microglobulin and the peptide RGPGRAFVTI from the V3-loop of the gp160 HIV-1 protein. Crystals belonging to the space group P212121 with cell dimensions a = 51.3, b = 92.5, c = 108.8 Å were obtained using two different crystallization conditions. The crystals contain one complex per asymmetric unit and diffract to at least 2.4 Å resolution.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Immunological reviews 155 (1997), S. 0 
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary: The missing self model predicts chat NK cells adapt somatically to the type as well as levels of MHC class I products expressed by their host, Transgenic and gene knock-out mice have provided conclusive evidence chat MHC class I genes control specificity and tolerance of NK cells. The article describes this control and discusses the POSSIBLE Mechanisms behind it. starting from a genetic model to study how natural resistance to tumors is influenced by MHC class I expression in the host as well as in the target cells. Data on host gene regulation of NK-cell functional specificity as well as Lγ49 receptor expression are reviewed, leading up to the central question: how does the system develop and maintain “useful” NK cells, while avoiding “harmful” and “useless” ones? The available data can be fitted with in each of two mutually non-exclusive models: cellular adaptation and clonal selection. Recent studies supporting cellular adaptation bring the focus on different possibilities within this general mechanism, such as energy, receptor calibration and, most importantly, whether the specificity of each NK cell is permanently fixed or subject to continuous regulation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK; Malden, USA : Munksgaard International Publishers
    Immunological reviews 206 (2005), S. 0 
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary:  The mucosal immune system in the female reproductive tract (FRT) has evolved to meet the unique requirements of dealing with sexually transmitted bacterial and viral pathogens, allogeneic spermatozoa, and the immunologically distinct fetus. Analysis of the FRT indicates that the key cells of the innate and adaptive immune systems are present and functionally responsive to antigens. Acting through Toll-like receptors in the Fallopian tubes, uterus, cervix, and in the vagina, epithelial cells, macrophages, natural killer cells, and neutrophils confer protection through the production of chemokines and cytokines, which recruit and activate immune cells, as well as bactericidal and virucidal agents, which confer protection at times when adaptive immunity is downregulated by sex hormones to meet the constraints of procreation. The overall goal of this paper is to define the innate immune system in the FRT and, where possible, to define the regulatory influences that occur during the menstrual cycle that contribute to protection from and susceptibility to potential pathogens. By understanding the nature of this protection and the ways in which innate and adaptive immunity interact, these studies provide the opportunity to contribute to the foundation of information essential for ensuring reproductive health.
    Type of Medium: Electronic Resource
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