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  • 1995-1999  (2)
  • Cryptophyceae  (1)
  • FISH  (1)
  • 1
    ISSN: 1615-6102
    Keywords: Cryptophyceae ; Periplast ; Cell wall ; Self-assembly ; Secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The cell covering of the cryptomonadKomma caudata (Geitler) Hill is a trilaminar structure consisting of a surface periplast component (SPC) and an inner periplast component (IPC) that sandwich the plasma membrane. In order to investigate the development of the periplast, we have raised monoclonal antibodies against the cell surface ofK. caudata. Immunoblot analyses using one of these antibodies, K1/D.10, showed that it labeled a high-molecular-mass polypeptide. Immunofluorescence and pre- and post-embedding immunogold labeling studies demonstrated that the antibody recognized sites on the cell surface corresponding to the SPC plates and anotherK. caudata cell surface component, the rosulate scales. Labeling was also detected on surface domains devoid of periplast, namely the vestibular/gullet region of the cell. Post-embedding immunocytochemistry revealed that intracellular sites labeled with K1/D.10 included the Golgi apparatus and its associated vesicles. We propose that the subunits of theK. caudata cell covering are antigenically related molecules and that they self-assemble on the cell surface after secretion via the endomembrane system and deployment at the vestibular/gullet region or, in dividing cells, the cytokinetic furrow.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Reproduktionsmedizin 15 (1999), S. 65-69 
    ISSN: 1434-808X
    Keywords: Schlüsselwörter PGD ; FISH ; PCR ; Laser biopsy ; Key words PGD ; FISH ; PCR ; laser biopsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Preimplantation genetic diagnosis (PGD) helps to diagnose severe genetic diseases in vitro. Prenatal diagnosis can be done as early as the early cleavage stages. Only those diseases that mean a severe condition for the newborn child should be indications to perform a PGD cycle. The routine techniques of PGD, especially biopsy techniques, polymerase chain reaction, fluorescence in situ hybridization and modifications of these techniques are discussed in this article.
    Notes: Zusammenfassung Durch die Präimplantationsdiagnostik (PGD) wird die Möglichkeit der Pränatalen Diagnostik in Fällen genetischer Erkrankungen, die das Leben des geborenen Kindes schwer beeinträchtigen oder mit dem Leben nicht vereinbar sind auf die Ebene des Embryos vor der Implantation verlagert. Der Ablauf der PGD sowie die aktuell eingesetzten molekulargenetischen Techniken wie Polymerasekettenreaktion (PCR), Fluoreszenz in situ Hybridisierung (FISH) oder modifizierte Formen, die momentan noch Gegenstand präklinischer Untersuchungen sind, sollen in dieser Arbeit dargestellt werden. Auch die Möglichkeiten der Zellentnahme haben sich durch die Entwicklung entsprechender Lasersysteme gewandelt, so daß nun sehr viel sicherer und komfortabler Blastomeren gewonnen werden können.
    Type of Medium: Electronic Resource
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