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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 21 (1994), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: DNA oligotyping was used to determine HLA-A28 subtypes in 25 unrelated Caucasian individuals living in or around Seville, Spain. Results showed that HLA-A*6802 was the most frequent allele, found in 14 individuals (53.8%), followed by HLA-68.3, which was present in eight subjects (30.8%), and both combined represented 84.6% of A28+ individuals in the area. The HLA-A*6801 allele was found in three individuals (11.5%), whereas HLA-A*6901 was present in one subject only (3.8%). Results indicate that the distribution of HLA-A28 alleles can vary among different Caucasoid populations. In this way, the high frequency obtained for A*6802 supports previous studies suggesting that the HLA-A*6802 allele was prevalent in people of the Mediterranean basin, in contrast to A*6801, prevalent in northern European populations.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Munksgaard International Publishers
    Allergy 58 (2003), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 45 (1997), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Natural IgM antibodies have been found to be involved in the control of IgG reactivity in normal serum. The authors investigated the blocking activity of four human IgM monoclonal antibodies (BY-2, BY-7, BY-10 and IRM-7) derived from B-cells from blood samples of three renal dialysis patients, which had shown multispecific properties similar to those observed for natural polyreactive autoantibodies. To achieve this, competitive inhibition assays were performed with these MoAbs on the binding of IgG purified from a healthy control, three patients with SLE, and two patients with autoimmune thyroiditis, to histone, dsDNA, RNP and thyroglobulin. MoAbs inhibited binding of self-reactive IgG to histone and dsDNA, but not to thyroglobulin or RNP, of natural and active or inactive phase disease-associated autoreactive IgG. The inhibitory effect of the MoAbs was mediated by V-region dependent interactions with autoreactive IgG, as shown by the ability of these MoAbs to block the binding of F(ab′)2 fragments of autoreactive IgG to antigens (histone and dsDNA). The blocking of autoantibody activity was dose-dependent with maximal inhibition occurring at a specific molar ratio between the patient's IgG and a given MoAb. In contrast, MoAbs did not inhibit binding of IgG alloantibodies present in the sera of four polytransfused renal dialysis patients to target antigens on the surface of different cells. These results support the concept of a functional idiotypic network regulating autoimmune responses, and suggest that the IgM MoAbs under study may be natural polyreactive antibodies belonging to the physiological network of autoantibodies with highly connected V-regions, capable of binding and functionally neutralizing V-regions of natural and pathologic autoantibodies.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 118 (1994), S. 0 
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A set of global Proudman functions, computed on a 2° finite-difference grid, is used to smooth raw tidal estimates previously derived by Cartwright and Ray from a two-year analysis of Geosat altimeter data. The least-squares problem provides an interesting application of ridge regression and Hansen's L-curve analysis. The final smoothed maps are found to agree more closely to a set of 80‘ground-truth’constants than did the original tidal models.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 21 (1994), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: HLA-DPB1 allele frequencies in 181 unrelated control individuals and 70 rheumatoid factor-positive RA patients from Seville (Spain) were determined using oligonucleotide typing methods. All frequencies shown concern the percentage of individuals positive for a certain allele. HLA-DPB1*0401 was the most common DPB1 allele in the healthy individuals, possessed by 65.7% of them. In addition to HLA-DPB1 *0401, only the following alleles were found in normal subjects at frequencies greater than 10%: DPB1*0101 (15.5%), DPB1*0201 (12.2%), DPB1*0301 (16.6), and DPB1*0402 (29.3%). When HLA-DPB1 allelic frequencies were compared between seropositive RA patients and controls, a negative association for DPB1*0301 and DPB1*0401 was found in RA patients, although it failed to reach statistical significance after correction for the number of comparisons made. The other DPB1 alleles exhibited almost identical frequencies in both groups. However, when only DR4+ patients and controls were considered, the decrease in the frequency of the DPB1*0301 and DPB1*0401 alleles lacked statistical significance. On the other hand, when DR4- RA patients and controls were compared, the frequency of DPB1*0301 was found decreased significantly again, even more than in the whole group of patients.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 27 (1998), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A histological and immunohistochemical study of the epididymis of 21 cats which ranged from 7 to 8 months to 2 years of age was made. Five different cell types were observed in the feline epididymis: principal and basal cells, which were the most numerous, apical and narrow, PAS positive cells, which were scarce, and migratory cells, consisting of lymphocytes and macrophages. Four morphologically distinct areas of the cat epididymis were identified. Region I displayed a stellate lumen and the principal cells were tall and presented long and irregular stereocilia. In region II, the lumen was oval and the principal cells were shorter than in the inicial area. Region III displayed characteristics similar to those of region I; the principal difference was the presence of short and regular stereocilia on the surface of the principal cells. In region IV the lumen was very spacious and the epithelium shorter than in the other regions. In regions I, II, and III intraepithelial cavities were observed. With regard to the immunohistochemical results, the basal cells displayed medium immunoreactivity with vimentin. Due to its anti-desmin reactivity, the muscle wall which surrounds the epididymis was seen to become progresively thicker as it nears the tail. Broad-spectrum anti-cytokeratin serum produced intense immunostaining in the basal, apical and narrow, PAS positive cells; the principal cells of region IV also displayed a strong immunoreactivity.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 18 (1979), S. 1741-1742 
    ISSN: 0031-9422
    Keywords: Compositae ; Geraea viscida ; gerin ; sesquiterpene methyl ester. ; trichome exudate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Photochemistry and Photobiology A: Chemistry 79 (1994), S. 213-219 
    ISSN: 1010-6030
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron: Asymmetry 3 (1992), S. 689-692 
    ISSN: 0957-4166
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Peripheral blood lymphocytes from two polytransfused renal dialysis patients were transformed by Epstein Barr virus, fused to heteromyeloma and cloned. Eight human monoclonal antibodies from the resulting clones were tested for their binding to variety of antigens by ELISA, indirect immunofluorescence and immunoblotting. Antigens tested included B-cell lines, T and B lymphocytes, red blood cells, chronic lymphocytic leukaemic B cells, IgG, ssDNA, dsDNA. histones, nucleoprotamine, sperm nuclei, thymus and spleen extracts. MOLT4 cell lysatcs, affinity purified autoantigens, tetanus toxoid, bacterial lipopolysaccharide, insulin, and tissue section screen. These human monoclonal antibodies reacted with more than one antigen to varying degrees and were autoreactive and pulyreactive. One of these heterohybridoma cell lines exhibited cytoplasmic staining with an anti-CD5 monoclonal. Our findings support the concept that in adult individuals subset of B cells produce heterogeneous IgM antibodies which can bind to variety of different autoantigens and also to foreign antigens. These monoclonals were different from the autoantibodies usually seen in renal dialysis patients in the sense that they were not lymphocytotoxic.
    Type of Medium: Electronic Resource
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