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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 113 (1963), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 113 (1963), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 553-554 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two stages are involved in the second ecdysis of nematode larvae in sheep4. Larvae are activated by a dialysable factor or factors in the alimentary tract and then secrete exsheathing fluid from a region near the base of the oesophagus. Exsheathing fluid acts on a circumscribed region of the ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 1057-1058 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Post mortem examination revealed that, in addition to the following parasites, Seuratia shipleyi, Prosthor-hynchus (?) linearis and some immature echinostomes which were present in small numbers, an extremely large number of unsporulated oocysts was found in the duodenum. In view of the number of ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 783-784 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Present work with A. lumbricoides has indicated that 'protective' immunity comparable to that produced by normal infection can be achieved if the time and route of the migratory phase are altered. This is induced by the subcutaneous injection of embryonated and infective ova so that a depot of ...
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 15 (1968), S. 0 
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Trypanosoma theileri has become the 1st mammalian trypanosome to be serially cultivated in a blood- and cell-free medium at 37 C. This was accomplished by progressive simplification of an initial culture medium containing whole bovine blood. Fifty-one subcultures in 4- to 5-ml quantities of monophasic liquid media were made over a period of 1 year. The final medium contained hemin and a defined modification of McCoy 5a tissueculture medium, supplemented with a peptone solution. Hemin was essential and T. theileri grew best with ∼1 mg/100 ml. Counts reached 8 × 106 organisms/ml in 3–4 days. Seventy-ml volumes of medium supported growth of T. theileri to 3-4 × 106 organisms/ml. Early in the study trypomastigotes were the predominant nondividing form, but they were absent when the medium was being rapidly modified. Trypomastigotes reappeared when the medium was stabilized at the end of the study. Elimination of serum antigens from the medium should greatly facilitate antigenic analysis of T. theileri.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 34 (1978), S. 723-724 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Albendazole, a benzimadazole-carbamate anthelmintic, has been shown to effectively cause destruction of the metacestodes ofTaenia saginata in calves.
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 719-720 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Preliminary investigations showed that a single intravenous dose of 4 mg/kg body-weight resulted in the death of one sheep from lung oedema in less than 18 h. Postmortem examination revealed widespread degeneration of walls of the blood vessels, haemorrhage and extensive necrosis of the kidneys and ...
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Parasitology research 70 (1984), S. 211-218 
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The in vitro transformation of lymphocytes in the presence of antigen was used to assay the response of lambs to antigens ofHaemonchus contortus. Neither uninfected lambs nor lambs infected withH. contortus up to 9 weeks of age developed in vitro lymphocyte responsiveness to antigen. A slight and transient increase in reactivity was demonstrable in some of the infected lambs when these were reinfected withH. contortus at 26 weeks of age. This lack of responsiveness could be modulated through the exposure of lambs, early in neonatal life, to multiple parenteral injections of soluble third stage larval antigen ofH. contortus. Thus, antigen specific responses were apparent in the lymphocytes from 21-week-old lambs if these were injected with antigen when 2 to 17 weeks of age. In particular, marked antigen specific reactivity developed in 19- or 24-week-old lambs if such lambs were injected with antigen on five occasions over the first 6 weeks of life and subsequently infected withH. contortus when 7 weeks old. This responsiveness was enhanced when the lambs were reinfected withH. contortus at 26 weeks of age.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Parasitology research 70 (1984), S. 219-228 
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Specific antigen-induced lymphocyte transformation in vitro and haemagglutinating antibody responses were absent from lambs infected withHaemonchus contortus. However, when lambs were injected with soluble third stage larval antigen ofH. contortus, given on five occasions during the first 6 weeks of life, specific antigen-induced lymphocyte transformation and haemagglutinating antibodies were induced to the antigen. In particular, a periparturient increased susceptibility to infection and the resultant presence of heavy infections withH. contortus in ewes appeared to prime their lambs to respond and marked lymphocyte transformation was observed in antigen injected lambs born of heavily infected ewes. The enhancement of this response was associated with the colostral transfer of as yet unidentified factors. The superimposition of an infection withH. contortus in lambs which had been stimulated to respond to antigen, suppressed the in vitro responsiveness of their lymphocytes. Although individual variation was apparent, a direct correlation between the presence of in vitro antigen-induced lymphocyte transformation to third stage larval antigen and susceptibility to infection occurred.
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