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  • 1
    Electronic Resource
    Electronic Resource
    Lysogeny and lysosensitivity in Shigella dysenteriae group of bacteria (1973)
    Springer
    Medical microbiology and immunology 159 (1973), S. 63-72 
    Details
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The set of lysogenic phages D2/D7, D4/D7, D5/D7, D8/D7, D4/B15 and D8/B15 was prepared from lysogenic bacterial strains representing various serotypes of Sh. dysenteriae. The activity spectrum of these phages was limited to some serotypes of Sh. dysenteriae, Sh. boydii, and to Sh. sonnei; they were not active against Sh. flexneri. With the use of a prepared set of phages, the Sh. dysenteriae 7 (D7) strain was found to be a strain with a broad spectrum of phage sensitivity, which was sensitive to all prepared temperate phages, and also to T2, T3, T4 and T6 phages. Extracts from D7 strain were shown to contain the receptor activity for prepared temperate phages as well as for T phages; trichloracetic acid extract (TCA) contains receptors for temperate phages. Receptor activity for phages T2 was found in water extract (H2O 65
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02122650
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Lysogeny and lysosensitivity inShigella dysenteriae group of bacteria (1974)
    Springer
    Medical microbiology and immunology 159 (1974), S. 233-242 
    Details
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Receptor substances for temperate phages, which were isolated from lysogenicSh. dysenteriae strains, were tested. These substances were obtained fromSh. boydii 15-7489, which served as an indicator and propagating strain, and fromSh. dysenteriae 2 andSh. dysenteriae 7, which were indicator strains. On the basis of agglutination and precipitation testa,Sh. bodii 15-7489 andSh. dysenteriae 2 were shown to be serologically related while no relationship was found betweenSh. boydii 15-7489 andSh. dysenteriae 7. According to experimental data, it was suggested that phage receptor sites are localized in the protein component of the somatic antigen. This component, occurring in all three examined strains, possessed common antigen properties, as was shown by use of receptor neutralization test.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02121339
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Hamster endogenous retrovirus (HaER) isolated from SV-40 induced tumor cells (1983)
    Springer
    Archives of virology 78 (1983), S. 233-244 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A hamster cell line obtained from a secondary transplanted SV-40-induced tumor was found to spontaneously release type C virus particles. The particles possessed all biochemical features characteristic of retroviruses and induced syncytium formation in XC cells but were not oncogenic for hamsters. Nucleic acid hybridization assays demonstrated that the isolated virus was an endogenous retrovirus of hamster, lacking sequence homology with mouse and other animal species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01311318
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  • 4
    Electronic Resource
    Electronic Resource
    Hamster endogenous retrovirus (HaER) — Distinct properties of structural proteins and DNA polymerase (1983)
    Springer
    Archives of virology 78 (1983), S. 245-253 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The structural proteins as well as some features of the RNA-dependent DNA polymerase of the hamster endogenous retrovirus (HaER) were examined. The polypeptide pattern of this virus is substantially different from that of other known retroviruses in containing major polypeptides with molecular weights of 68,000, 59,000, 27,000 and 24,000 daltons. Double antibody competitive radio-immunoassays showed that the HaER particles do not share any detectable antigenic relatedness with the murine viruses' p30, but manifest a considerable relatedness with the feline leukemia virus p27 and a slight cross-reactivity with the rat virus major protein. The RNA-dependent DNA polymerase of HaER virus has a molecular size of approximately 73,000 daltons and in contrast to other mammalian retroviruses shows no significant preference for Mn2+ over Mg2+. Apart from the lack of antigenic relatedness between the HaER virus proteins and the p30 protein of murine viruses, there is also no antigenic relatedness between HaER and murine viruses insofar as their DNA polymerase is concerned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01311319
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    Paper (German National Licenses)
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