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  • Articles  (32,109)
  • 1980-1984  (32,109)
  • 1984  (32,109)
  • Medicine  (32,109)
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  • Articles  (32,109)
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  • 1980-1984  (32,109)
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Journal
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: NIM-M8 is a monoclonla IgM antibody, specific for the LWab antigen as shown by its reaction with red cells of all donors except those lacking LWa, LWb and LWab. Indirect immunofluorescent staining and cell sorter analyses have shown that LWab is present on a subpopulation of human lymphoctes. Cell fractionation studies indicate that subsets of both B and T cells express LWab and it may, therefore, provide a further marker for heterogeneity in these lymphocyte populations.
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Immunoprecipitation using a monoclonal antibody showed that the Wrb antigen is present on the abnormal (δ-α) hybrid sialoglycoprotein of Sta-positive human erythrocytes but not on the abnormal (δ-α) hybrid sialoglycoprotein of Dantu-positive erythrocytes. These results provide further information regarding the nature and location of the Wrb antigen on the normal erythrocyte sialoglycoprotein α.
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: We studied structural and functional characteristics of lymphocytes from adult and fetal baboons (Papio cynocephalus). Flow cytometry with monoclonal antibodies to human lymphocyte antigens and plant lectins was used to define expression of surface antigens on lymphocytes from adult and 140 day fetal baboons (term = 180 days). Major T cell antigenic determinants on adult and fetal baboon lymphocytes were the Tp50, Tp32-45, and p45 glycoproteins detected by monoclonal reagents T11, OKT8, and OKT10 respectively. Baboon T lymphocytes did not react with the OKT3/anti-Leu4 or OKT4/ anti-Leu3a reagents which detect, respectively, Tp19-29 and Tp55, major surface glycoproteins on human T lymphocytes. OKT6, which identifies the human TL antigen equivalent on thymocytes, did not react with baboon thymocytes. These data demonstrate major evolutionary divergence between human and baboon T lymphocytes. By contrast, baboon lymphocytes resembled human peripheral lymphocytes in reactivities with several non-T cell reagents. Lectin binding studies revealed substantially fewer peanut agglutinin-and wheat germ agglutinin-binding cells in suspensions of baboon fetal splenocytes and adult peripheral lymphocytes compared with fetal thymocytes. Thereffore, maturation of baboon T lymphocytes is associated with loss of surface carbohydrate structures that bind these lectins. Adult and fetal baboon lymphocytes resembled human and murine lymphocytes in their capabilities to respond to mitogens and to produce interleukin-2. As in oter species, adult, but not fetal baboon lymphocytes, mediated NK activity against a variety of nucleated target cells. Despite divergence in lymphocyte antigen epression, babbon lymphocyte functional development colsely parallels that seen in humans.
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The Gm, Am and Km immunoglobulin allotypes and ABO blood groups were studied in three groups of Tunisian Berbers.The results showed that the actual Berbers of Tunisia present certain heterogeneity and their ancestors were probably the first inhabitants of North Africa. Indeed, although their Gm-Am haplotypes are mainly Caucasoid, some of them are typically African.The group of Kesra village, the most Caucasoid, shows frequencies of Gm-Am haplotypes very close to those of South European populations, particularly the Spanish, who are probably of the same origin. The gene frequencies of the ABO groups in the three Berber groups were similar to those recorded in European populations with a relatively high frequency of the O genes typical of the Berbers.
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Monoclonal antibody 212.i.4.2 mediated complement-dependent lysis of spleen and lymph node cells carrying the tw1, tw12, tw71, t6, tw73, and tLub1 haplotypes, while cells from mice carrying 11 other t haplotypes were not lysed. The antibody also detected an epitope controlled by genes in the H-2Dd region of non-t mice. A molecule of 46,000 molecular weight was immunoprecipitated by 212.i.4.2 from detergent extracts of 125I-labelled spleen cells of +/tw12 and B10.D2 mice. The H-2dm2 mutation did not alter the expression of the epitope recognized by 212.i.4.2. However, the H-2dm1 mutation decreased the reactivity of lymphoid cells with the antibody in cytotoxicity tests, and 212.i.4.2 immunoprecipitated little or no protein from extracts of B10.D2(R106) spleen cells which carry the H-2dm1 mutation.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Spleen cells from Balb/c mice given multiple injections of intact human erythrocytes (group O, NN) were fused with NS1 myeloma cells. Culture fluids from the resulting hybrid cells were screened for agglutinating antibody against a panel of erythrocytes. One cell line, 2/23, secreted an IgM antibody which reacted more strongly with NN than with MM cells. Neuraminidase or papain treatment of erythrocytes abolished agglutination whereas trypsin treatment did not. Reactions with U-erythrocytes of different MN phenotypes confirmed the anti-N specificity of monoclonal antibody 2/23. This is the first report of monoclonal anti-N stimulated by the immunization of mice with intact erythrocytes.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Spleen cells from 30 individual murine irradiation chimeras of the type (P1 x P2)F1→ P1 were compared in a rosetting assay for H-2K and H-2D cell surface antigen expression with normal (P1 x P2)F1 hybrid controls. Eleven out of the 30 chimeras were in the normal range, but the other 19 differed from F1 controls by 4- to 100-fold in endpoint titre for at least one H-2K or H-2D antigen. Every possible class of variation was found, i.e. up or down variation of H-2K or H-2D antigens of P1 or P2 type. This evidence, together with data from T6 chromosome marker experiments which also showed full reconstitution of lethally irradiated P1 recipients by (P1 x P2)F1 donor lymphomyloid stem cells, suggested that incomplete reconstitution was not the cause of H-2 antigenic variation.Low expression of P2 H-2 antigens on spleen cells derived from (P1 x P2)F1→ P1 chimeras was investigated further. Fifteen lethally irradiated (P1 x P2)F1 recipients of bone marrow cells from two such chimeras were all of normal F1 H-2 phenotype when tested 10-12 weeks after reconstitution, thus excluding stable, low P2 H-2-expressing variant F1 stem cells as a cause of the phenomenon. If P1 recipients were hyperimmunized against P2 cells before lethal irradiation and reconstitution with (P1 x P2)F1 stem cells, there were significantly fewer Till-McCulloch colonies in their spleens 10 days after reconstitution than in spleens of unimmunized controls. Also 〉 90% of immunized recients died by 6 weeks after stem cell injection but two survivors both showed very low levels of P2 H-2K and H-2D antigens. These results together with previously published evidence of anti-P2 Tc cell activity and P2 skin graft rejection in (P1 x P2)F1→ P1 chimeras suggested that residual anti-P2 immunological capability in lethally irradiated P1 recipients may be associated with low P2 H-2 expression on their F1-derived spleen cells, although the mechanism does not involve selection of stable, variant F1 stem cells. The mechanism(s) of other classes of variation in H-2 expression in (P1 x P2)F1→ P1 chimeras were not investigated.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: RNA was extracted from the splenocytes of Brucella abortus antigen stimulated mice and of control mice. The proportion of chromatographically separated polyadenylated 11.2S mRNA, was determined. With the technique used, only stimulated mice exhibited significant amounts of this RNA species. The highest level was reached 1 day after the stimulation, and the decay from this level presented an oscillatory form during the 4 weeks following the injection.In two different genetic backgrounds, H-2b mice did not respond to the stimulus, in contrast to H-2a and H-2f mice. H-2b/H-2f heterozygotes behaved roughly as intermediate between H-2b and H-2f mice. This genetic control seems to parallel the genetic control of some Brucella-induced, thymus-dependent events previously described.
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Book Reviews in this ArticleR. WITKOWSKI and O. PROKOP: Genetik erblicher Syndrome und Mgbildungen. Worterbuch fur die Familienberatung.
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 11 (1984), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Monoclonal anti-Ia inhibition experiments were conducted to confirm and extend genetic mapping data of I-A gene control of immunity to human haemoglobin (Hb). It was found that the Aβ gene is of critical importance in conferring immunity to the α-chain and β-chain subunits of Hb. A possible involvement of I-E region genes in B10.D2 mice to β-chain is discussed. Through the use of an α-chain specific T cell clone data, is obtained indicating that an intact Ia.8+ Aβ chain is necessary for antigen presentation in vitro.
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