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
    s.l. : American Chemical Society
    Inorganic chemistry 14 (1975), S. 1817-1822 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung T- und B-Zellzählungen, Bestimmungen der Fluidität von Ig-Rezeptoren und der Grad der Virusantigen-Expression wurden korreliert mit histologischen Befunden während der Latenzzeit und Tumorbildung von virusinduzierten Lymphomen der Maus. Zur Untersuchung kamen BALB/c Mäuse nach Infektion mit dem stark onkogenen Moloney Leukämievirus (MLV), dem mittelgradig bei der BALB/c Maus onkogenen Gross Passage A virus (GLV-A) und dem praktisch nicht onkogenen Gross 3T3 Zellkulturvirus (GLV-T). Die Methodik schloß ein: Immunfluoreszenzmikroskopie mit Antiseren gegen T-Zellen, B-Zellen und MLV-intaktem Virus, Histologie und Elektronenmikroskopie. Folgender Ablauf von Veränderungen wurde beobachtet bei MLV- und GLV-A infizierten Mäusen, jedoch nicht bei GLV-T infizierten Tieren: Eine signifikante Abnahme der Fluidität von Ig-Rezeptoren und eine erhebliche Expression von Virusantigen wurden bereits bei der ersten Untersuchung, d. i. 2 Wochen nach der Infektion, beobachtet. Es folgte 5–8 Wochen später eine signifikante Herabsetzung der Prozent-T-Zellen, begleitet von einer histologisch verifizierbaren Thymusatrophie und Atrophie der thymusabhängigen Partien des lymphatischen Gewebes. Weitere 2–8 Wochen später wurden die ersten Lymphomherde histologisch im atrophischen Thymus diagnostiziert. Klinisch feststellbare und generalisierte Lymphome waren dann 20–30 Wochen nach Virusinfektion zu erheben. Ultrastrukturell fanden sich Veränderungen in Anordnung und Quantität cytoplasmatischer Mikrofilamente in proliferierenden Lymphoblasten und Lymphomzellen. Es wird geschlossen, daß die beobachteten Veränderungen auf die onkogene Wirksamkeit von Typ C Mäuse-RNS-Viren zurückzuführen ist und nicht auf eine Virusinfektion per se.
    Notes: Summary T- and B-cell counts, estimation of Ig receptor fluidity, and expression of virus-coded antigens were correlated with histological findings during the development of virus-induced mouse lymphoma. Tested were BALB/c mice after infection with the strongly oncogenic Moloney leukemia virus (MLV), the moderately oncogenic (in BALB/c mice) Gross passage A virus (GLV-A), and the essentially non-oncogenic Gross 3T3 tissue culture virus (GLV-T). Methods included immunofluorescence microscopy with antisera against T-cells, B-cells and MLV intact virus, routine histology, and electron microscopy. Following time sequence of changes was observed in mice with oncogenic MLV- and GLV-A infection but not in GLV-T infection: Significant decrease of Ig receptor fluidity and expression of virus antigen were observed already at the initial investigation,i.e. 2 weeks post virus infection. This was followed by significant decreases in percent T-cells 5–8 weeks later, accompanied by histologic atrophy of the thymus and of thymus-dependent regions of lymphatic tissues. Another 2–8 weeks after the decrease in percent T-cells occurred, the first lymphomatous foci became obvious in the thymus. Clinically overt and generalized lymphoma was diagnosed at 20–30 weeks post virus infection. Ultrastructurally, some changes in the arrangement and quantity of cytoplasmic microfilaments were noted in proliferating lymphoblasts and in lymphoma cells. It is concluded, that the described changes were related to the oncogenic potential of mouse C-type RNA viruses and not just to virus infection per se.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 11 (1976), S. 154-166 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A mass spectrometer equipped with a dual ionization chamber ion source has been used to characterize directly the neutral species produced in the dissociative ionization of gases by electron impact. Neutral fragment mass spectra have been obtained for the electron ionization and fragmentation of benzene, toluene, o-xylene, m-xylene, p-xylene, mesitylene and isotopically labeled toluene. The neutral fragment mass spectra correlate well with the structures of the molecules. The abundant species in the neutral fragment mass spectra also correlate reasonably well with the abundant complementary positive ions of the normal mass spectra. Ionization potentials have been determined for the abundant neutral species produced. Where comparisons with values reported elsewhere are possible, the agreement is usually within ±0.2 eV or less.
    Additional Material: 9 Ill.
    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...