Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 10 (1968), S. 74-81 
    ISSN: 1432-0533
    Keywords: Encephalitis ; Panencephalitis ; Immunofluorescence ; γ-Globulin ; Plasmocytic infiltration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An perivasculären entzündlichen Infiltratzellen einer Panencephalitis wurde die Immunofluorescenz als Nachweis vom γ-Globulin in Plasmazellen untersucht und die fluorescenzoptischen Ergebnisse folgender vier verschiedener Gewebepräparationsmethoden verglichen: Formolfixierung, Modifikation der Albrechtschen Carnoy-Chloroformfixierung, Gefriertrocknung mit Carbowax-Einbettung und Gefrierschnitt-Technik an unfixierten Geweben. Die beste Immunofluorescenz bei gleichzeitiger guter Wahrung der strukturellen Gewebeformation wurde erzielt mit der modifizierten Carnoy-Chloroformfixierung und der Gefriertrocknung, während die Gefrierschnitt-Technik am unfixierten Gewebe zwar eine ausreichende Fluorescenz zeigte, aber in der Lokalisation des immunologischen Geschehens unzureichend war. Das formalinfixierte Gewebe war fluorescenzoptisch inaktiv. Als Methode der Wahl für die Fluorescenzmikroskopie an Hirngewebe wird die Gefriertrocknung mit Carbowax-Einbettung angesehen, da chemische Fixierungmittel nicht benutzt werden und daher denaturierte Eiweißstrukturen fluorescenzoptisch nicht zu erwarten sind.
    Notes: Summary In a case of panencephalitis the immunofluorescence technique was used to prove the presence of γ-globuline in plasmacells of perivascular infiltrations. The following four different brain tissue preparation methods were employed and the results compared: 1. formalin fixation, 2. modification of the Albrecht Carnoy-chloroform fixation, 3. lyophilisation with polyaethylenglycoll embedding, 4. frozen sections of unfixed tissue. The brightest staining and the utmost preservation of the tissue structure was obtained with the modified Carnoy-chloroform- and the lyophilisation techniques. The fluorescence in the frozen sections was sufficient, but the immunological reaction could often not be localized due to the loss of the tissue structure. The formalin treated tissue did not show any fluorescence. We consider the lyophilisation method with polyaethylenglycoll embedding for brain tissue as the best method since no chemical fixing agent is employed and therefore no unspecific staining resulting from denaturated protein structures is to be expected.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1615-6102
    Keywords: Algae ; Virus assembly ; DAPI staining ; Electron microscopy ; Hincksia hincksiae ; Immunofluorescence ; Marine double-stranded DNA virus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The filamentous brown algaHincksia hincksiae can be infected by a large icosahedral double-stranded DNA virus (HincV-1). The virus shows extended latency and is replicated only in cells homologous to sporangia. Virus formation was studied by transmission electron microscopy, DAPI staining, and β-tubulin immunofluorescence. Inhibition of cytokineses results in multinucleate cells, which are the first indication of virus replication in productive cells; the microtubular cytoskeleton does not seem to be affected by the virus. Replication of viral DNA begins in the nuclei, which increase in size and eventually disintegrate. Virus assembly takes place in a mixed nucleo-/cytoplasm. Capsids bud from cisternae, which are interpreted as modified endoplasmic reticulum aggregated to virus assembly centres. The internal membranous component of the virus is thus derived from the endoplasmic reticulum. The particles are empty (electron translucent) when assembled, and the nucleoprotein core seems to be packaged subsequently through an opening in the capsid. A number of fine structural features not previously reported from brown algae and related to virus formation are described. Our results on Hincksia hincksiae virus are compared with observations made on various other icosahedral DNA viruses infecting eukaryotic algae and animals.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...