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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 32 (1993), S. 12186-12196 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 79 (1990), S. 692-696 
    ISSN: 1432-0533
    Keywords: Arthrogryposis multiplex congenita ; Spinal cord dysplasia ; Hypoplasia, posterior spinal roots ; Spinal root ganglia, rudimentary ; Dysplasia, inferior olivary nuclei
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report a male infant with arthrogryposis multiplex congenita (AMC) who survived for 19 weeks following birth at 36 weeks gestational age. No heritable or acquired cause of neuromuscular disease was found. He manifested joint contractures of upper and lower extremities, diffuse hypotonia requiring ventilatory support, and areflexia; the general examination also showed facial dysmorphisms, and an ichthyotic rash. Pathological examination of the brain and spinal cord revealed severe hypoplasia of dorsal roots and posterior columns, nondecussation of pyramidal tracts, and anterior horns of an unusual configuration: the brain was normal, and the cerebellum contained Purkinje cell heterotopias. Muscle spindles could not be identified. To our knowledge, these spinal cord abnormalities in association with AMC have not been previously reported, thus raising interesting speculations about the possible role of such abnormalities in the pathogenesis of AMC.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 51 (1991), S. 73-79 
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The kaon B-parameter is computed in the framework of strictly local QCD sum rules for a threepoint function involving pseudoscalar currents. As an application of these sum rules we derive a low energy formula for the B-parameter. We show that strictly local QCD sum rules yield more reliable results than other QCD sum rules, since they need less phenomenological information and do not suffer from stability problems. Our result for the B-parameter isB=0.74±0.17.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurocytology 21 (1992), S. 363-373 
    ISSN: 1573-7381
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary H-CAM (CD44/Hermes antigen) is an 85–95 kDa widely-distributed cell surface adhesion molecule that participates in diverse cellular interactions. It is an important cell surface receptor of hyaluronate, and has been implicated in the binding of circulating lymphocytes of endothelial cells in the process of lymphocyte homing. Here we define the immunohistological distribution of H-CAM in the human nervous system as a means of assessing its possible participation in nervous system ontogeny and function. H-CAM is widely expressed in human CNS white matter by subsets of glial cells, and within the neuropil of several grey matter structures. Neurons appear uniformly negative. H-CAM+ cells and processes are first detected at 20 weeks gestation in a diffuse subependymal pattern, and staining of the anchoring processes but not the cortical extensions of radial glia is seen by 24 weeks. Beginning at 26 weeks, H-CAM+ astrocytes also demarcate fascicles of axons in developing white matter tracts, becoming diffusely distributed in all CNS white matter by full term gestation. In the mature CNS, fibrous and subpial astrocytes, glial outlines within the glomeruli of the cerebellar granule cell layer, Bergmann glia, and extraneuronal grey matter matrix in certain locations are H-CAM+. In reactive gliosis occurring in foetal and developed brains, H-CAM is strongly and uniformly expressed by GFAP+ astroglial cells. In the PNS, dorsal roots express substantially higher levels of H-CAM than ventral roots, and there is an accompanying inverse staining pattern displayed by weakly immunoreactive posterior horns and positive anterior horns. Also, there is an abrupt cessation of H-CAM expression at the junction of the central and peripheral segments of cranial nerves. These findings indicate the dynamic regulation of H-CAM expression in the developing human nervous system, and suggest the hyaluronate-binding activity and potentially other cell-cell or cell-matrix adhesive functions of H-CAM may play an important role in development of the nervous system.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 66 (1994), S. 977-978 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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