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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 6 (1977), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Homozygous typing cells (HTC) for two new HLA-D determinants, EI and RE, defined by family studies, are described. The HLA-D typing experimtens among more than 300 unrelated individuals showed phenotype frequencies of 0.045 for El and 0.098 for RE. Since the tested population was also typed for its HLA-A and -B alleles, linkage disequilibrium parameters could be calculated: HLA-D type El was statistically significantly associated with HLA-B13 and Bwl7, HLA-D type RE with HLA-Bw40. These data support the working hypothesis that both EI and RE are new alleles of the HLA-D series.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 1204-1205 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1941 Schaefer reported that he could make lasting replicas of snow crystals by coating them with a thin film of polyvinylformal in ethylene dichloride and allowing the plastic to harden while the solvent evaporated2. After the ice in the crystals had sublimed through the ?Formvar? film, large ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Invertebrate Pathology 22 (1973), S. 372-376 
    ISSN: 0022-2011
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 230 (1980), S. 167-172 
    ISSN: 1432-0711
    Keywords: Placental protein PP15 ; Isolation ; Characterization ; Immunosuppressive properties ; Plazentaprotein PP15 ; Isolierung ; Charakterisierung ; immunsuppressive Eigenschaften
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Beschrieben wird die Isolierung und Charakterisierung eines neuen Plazentaproteins (PP15) mit immunsuppressiver Wirkung. PP15 wurde aus dem wäßrigen Extrakt von reifen menschlichen Plazenten durch fraktionierte Fällung mit Rivanol und Ammoniumsulfat sowie durch Gelfiltration, Ionenaustauschchromatographie, Präparative Zonenelektrophorese und Chromatographie an Hydroxylapatit isoliert. Das gereinigte Protein sedimentiert in der Ultrazentrifuge mit 2,9 S; es hat ein Molekulargewicht von 30 700 Daltons und ist offensichtlich aus zwei identischen Untereinheiten aufgebaut, die durch Nebenvalenzen zusammengehalten werden. Seine elektrophoretische Beweglichkeit entspricht der von Albumin. PP15 ist ein Glykoprotein und enthält 3,3% Kohlenhydrate (2,8% Hexosen, 0,3% Hexosamine und 0,2% Neuraminsäure). Auch die Aminosäurenzusammensetzung des Proteins wird mitgeteilt. Die am häufigsten vertretenen Aminosäuren in der Peptidkette sind Glutaminsäure, Asparaginsäure, Isoleucin und Leucin. PP15 hat immunsuppressive Wirkung; bei seiner Untersuchung im MLC-Test wurde in vitro eine signifikante inhibitorische Wirksamkeit auf die Lymphozytentransformation festgestellt.
    Notes: Summary The isolation and characterization of a new placental protein (PP15) which has immunosuppressive properties are described. The protein was purified from extracts of human term placentae by rivanol and ammonium sulfate fractionation, gel filtration, ion exchange chromatography, preparative zone electrophoresis, and chromatography on hydroxyapatite. PP15 was found to have a sedimentation coefficient of 2.9 S and a molecular weight of 30,700 daltons as determined by ultracentrifugation; its molecules apparently are composed of two identical subunits which are held together by non-covalent bonds. The electrophoretic mobility of PP15 corresponds to that of albumin. PP15 is a glycoprotein and contains 3.3% carbohydrates (hexoses 2.8%, hexosamines 0.3%, sialic acid 0.2%). The amino acid composition of this protein was also determined: the most abundant amino acids in the peptide chain were found to be glutamic acid, aspartic acid, isoleucine, and leucine. PP15 has immunosuppressive properties: on testing its effect on the lymphocyte transformation in the MLC-test in vitro a significant inhibitory activity could be demonstrated.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Applied microbiology and biotechnology 38 (1992), S. 328-333 
    ISSN: 1432-0614
    Keywords: Antithrombin III ; Microcarriers ; Mammalian cell culture ; Fatty acid utilization ; Serum-free medium ; Baby hamster kidney (BHK) cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Anchorage-dependent human antithrombin III-producing recombinant baby hamster kidney (rBHK) cells were cultivated on Cytodex 3 microcarriers in repeated batch mode. During a 3-month experiment four different low-serum (0.025% fetal bovine serum) or serum-free medium formulations were evaluated for (a) the initial growth phase of cells and (b) the subsequent production phase, whereby two free fatty acid (FFA) supplements were examined with respect to their growth-promoting and product-formation-enhancing properties. Selected nutrient and (by)product consumption and production rates (including those for antithrombin III, amino acids, and fatty acids) are reported. The calculated metabolic quotients reflect the prevailing slow growth conditions (μ approx. 0.06 day−1) associated with microcarrier cultures. Specific antithrombin III productivities vary singificantly as a function of the feed medium supplementation with FFA.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This study was undertaken to get more insight into the previously suggested heterogeneity of the HLA-DW3 cluster. Preliminary evidence of DW3 heterogeneity was derived from results of intrafamilial mixed lymphocyte culture tests (MLC) where cells of apparently homozygous offspring revealed unexpected stimulations of one of the parents' cells. Therefore, 15 different homozygous typing cells (HTCs) of DW3 specificity were tested against 43 HLA-DW3 heterozygous individuals. The response patterns of the 43 HLA-DW3 heterozygous cells toward 13 HTCs lead to the definition of at least three groups of DW3 stimulating cells. According to these patterns, four groups of responding cells could be classified. These results were confirmed by a MLC checkerboard experiment running all DW3-HTCs against each other. Discussing all possible explanations for these observations, the authors conclude that the existence of DW3 subtypes having some properties in common is the most likely interpretation of the results obtained. Family segregation studies will be needed to define the genotypic situation of the DW3 cluster.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Of eight lymphoblastoid cell lines studied five were insensitive to both the anticellular and antiviral activities of human leukocyte interferon, and two were sensitive to both activities. One line could not be fully evaluated since it was not possible to study its sensitivity to the antiviral activity.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Biotechnology letters 12 (1990), S. 317-322 
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Specific consumption and production rates of nutrients and by-products (metabolic quotients) were estimated from batch growth data for recombinant CHO and BHK cell lines. Distinct differences were identified for the two types of continuous cell lines and were further observed for the adherent baby hamster kidney cells as a function of serum concentration.
    Type of Medium: Electronic Resource
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