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  • 1
    Electronic Resource
    Electronic Resource
    Primary lymphoma of the thyroid: a clinical, histological and immunohistochemical study of 20 cases (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 17 (1990), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Twenty cases of malignant lymphoma arising in the thyroid gland were studied clinically, histologically and immunohistochemically. Nineteen cases were non-Hodgkin's lymphoma (15 diffuse and four follicular lymphoma) and one was a plasmacytoma. Immunohistochemical analysis of the lymphomas using paraffin-embedded sections disclosed that 17 lymphomas were B-cell type and two were T-cell type. The plasmacytoma was of IgG kappa type. The large majority of the lymphomas were associated with an underlying chronic thyroiditis. The 5-year survival rate of the patients was 70%. An unfavourable diagnosis was more likely when the tumour was diffuse rather than follicular, when it was of diffuse large cell type or of immunoblastic type and when there was cervical lymph node involvement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1990.tb00708.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Expression of monoamine oxidase B activity in astrocytes of senile plaques (1990)
    Springer
    Acta neuropathologica 80 (1990), S. 419-425 
    Details
    ISSN: 1432-0533
    Keywords: Monoamine oxidase-B ; Astrocyte ; Senile plaques ; Dementia of Alzheimer type
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Monoamine oxidase (MAO) histochemistry has been performed in brains from patients with dementia of Alzheimer type (DAT) and aged controls. Conspicuous MAO-positive cell clusters were frequently observed in the amygdala, hippocampus, and insular cortex in the brains of DAT. Double staining with glial fibrillary acidic protein immunohistochemistry revealed that the clusterforming MAO-positive cells were astrocytes. Using Bielschowsky's method, Congo red and thioflavin S counterstaining, this astrocytic mass was shown to be associated with senile plaques. By the enzyme inhibition experiment, MAO activity in senile plaques was revealed to be of type B. The present results clearly indicate that MAO-B activity is expressed in fibrillary astrocytes in or around senile plaques, suggesting that these astrocytes metabolize exogenous amines in senile plaques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307697
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    In situ hybridization of muscle mitochondrial mRNA in mitochondrial myopathies (1990)
    Springer
    Acta neuropathologica 81 (1990), S. 1-6 
    Details
    ISSN: 1432-0533
    Keywords: In situ hybridization ; Mitochondrial DNA ; Mitochondrial myopathy ; Ophthalmoplegia ; Cytochromec oxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To determine whether a mitochondrial mRNA deficiency exists in mitochondrial myopathies, muscle biopsies from a patient with chronic progressive external ophthalmoplegia (CPEO) and a patient with mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes (MELAS) were studied using in situ hybridization. Histochemistry and immunohistochemistry were performed along with hybridization. Hybridization reactions were widely distributed over the sarcoplasm of all muscle fibers in the patient with MELAS. In the patient with CPEO, 80% of the fibers showed a marked decrease in density of autoradiographic grains. This marked decrease corresponded to the histochemical and immunohistochemical findings of a very weak staining of cytochromec oxidase (CCO). The isotope-labeled cDNA probe used in in situ hybridization in this study complements a part of subunit I of CCO and a part of subunit II of complex I in the mitochondrial gene. Our results suggest a defect in the mRNA in this CPEO patient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662630
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Low energy bands do not contribute to quantum hall effect (1990)
    Springer
    Communications in mathematical physics 131 (1990), S. 283-305 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Using non-commutative geometry and localization techniques we prove rigorously a result of Tesanovic, Axel and Halperin, namely that low energy bands in an ordered or slightly disordered 2D crystal submitted to a uniform magnetic field, do not contribute to the Hall conductivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02161415
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  • 5
    Electronic Resource
    Electronic Resource
    Immunocytochemical localization of endothelin in cultured bovine endothelial cells (1990)
    Springer
    Histochemistry and cell biology 94 (1990), S. 475-477 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary To investigate the intracellular localization of endothelin in cultured endothelial cells, an immunocytochemical study was carried out by the post-embedding protein A-gold technique with endothelin-specific antiserum. Gold particles were seen on the rough endoplasmic reticulum, the Golgi cisternae, the Golgi vesicles, small vesicles beneath the cell membrane, and the lysosomes. By contrast, no secretory granules were observed. These results suggest that endothelin is secreted by a constitutive pathway and that the lysosome may play an important role in regulating the biological activity of endothelin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00272609
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    In vitro root induction by 24-epibrassinolide on hypocotyl segments of soybean [Glycine max (L.) Merr.] (1990)
    Springer
    Plant growth regulation 9 (1990), S. 73-76 
    Details
    ISSN: 1573-5087
    Keywords: adventitious roots ; brassinolide ; hypocotyl ; soybean (Glycine max)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Soybean hypocotyl segments were treated in the dark with 24-epibrassinolide (BR) at a range of concentrations for different durations. The maximum effect on adventitious root induction, both in terms of number and length was obtained at very low concentration (0.0001 ppm) of BR applied for 8 h. Higher concentrations were supraoptimal unless applied for a shorter period (4 h). BR was ineffective when applied at low concentration in continuous light.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025281
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    Paper (German National Licenses)
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