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  • 1970-1974  (1)
  • 1955-1959  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 45 (1957), S. 728-759 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Eastern Venezuela is divided into three geologic-geographic provinces: The Guayana shield in the south; the Eastern Venezuelan basin in the central part; and the mountains of the Serranía del Interior and Cordillera de la Costa (Caribbean Cordillera) in the northern part. The stratigraphy and geological history are discussed, as reflected by rocks of presumably pre-Cambrian, ? Triassic-Jurassic, Cretaceous, Tertiary and Quaternary ages. From the Cretaceous onward, Eastern Venezuela north of the Guayana shield and east of the El BaÚl swell, forms part of a geosyncline, the axis of which shifted southward during its history. The position of this axis governed deposition and character of the sediments, which become more marine from south to north and from west to east. Orogenic and epeirogenic movements, particularly during Miocene and Pliocene time, transformed the Eastern Venezuelan sedimentary basin into two structural basins, namely the Maturín basin on the east and the Guárico basin on the west.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 51 (1973), S. 725-729 
    ISSN: 1432-1440
    Keywords: Antibody deficiency syndrome ; connatal dysgammaglobulinaemia Type I ; macroglobulinaemia ; Antikörpermangelsyndrom ; connatale Dysgammaglobulinämie Typ I ; Makroglobulinämie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird ein Fall von Dysgammaglobulinämie Typ I (Einteilung nach Rosen und Janeway [20]) mitgeteilt. Der 7jährige Knabe zeigte die typischen Zeichen eines Antikörpermangelsyndroms seit seinem ersten Lebensjahr. Die Acetatfolienelektrophorese war unauffällig, trotzdem fehlten bei dem Patienten IgG und IgA vollständig. Erst die immunelektrophoretische Analyse deckte den Defekt auf: Eine im β2-Bereich nachweisbare Doppellinie entsprach zwei verschiedenen Typen von IgM-Molekülen, nämlich IgM-kappa und IgM-lambda, wie durch entsprechende Erschöpfung des Antiserums mit Bence-Jones-Proteinen vom kappa- und/ oder lambda-Typ gezeigt werden konnte. Die analytische Ultrazentrifugation und die Gelfiltration über Sephadex G 200 bestätigte das Vorliegen einer polyklonalen Makroglobulinämie, der Serum-IgM-Gehalt betrug etwa 880 mg/100 ml (Ergebnis der Ultrazentrifugation). Das exzessiv vermehrte IgM erschien inert, es konnten keine Isoagglutinine nachgewiesen werden.
    Notes: Summary A case of dysgammaglobulinaemia type I (according to Rosen and Janeway [20]) is reported. Since his first year of life, a seven year old boy suffered from symptoms typical of an antibody deficiency syndrome. Paper electrophoresis was normal, but IgG and IgA were completely missing. The defect was finally analysed by immune electrophoresis: A double band in the region of β2 corresponded to two different types of IgM molecules, namely kappa and lambda, as could be demonstrated by exhaustion of the antisera with Bence-Jones proteins of the kappa- and lambda-type. Macroglobulinaemia was confirmed by analytical ultracentrifugation and Sephadex G-200 gel filtration. The serum IgM level was approximately 880 mg/100 ml. Isohemagglutinins however were absent. It was concluded that the excessively increased IgM was functionally inert.
    Type of Medium: Electronic Resource
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