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  • 1
    Electronic Resource
    Electronic Resource
    Immunization by Irradiated Eimeria acervulina (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 19 (1972), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. In 5 experiments the infectivity and immunogenicity for chickens of sporulated oocysts of Eimeria acervulina that had been previously subjected to different levels of gamma radiation was tested. It was found that the irradiation doses can be divided into three groups: a) High dosage levels of over 16,000 rad impair the reproduction of the parasites so that few or no oocysts are discharged and no immunity is produced. b) Low dosage levels of 7,000 rad and less permit reproduction and development of immunity not perceptibly different from that resulting from unirradiated oocysts. c) An intermediate range of levels with the optimum from 9,100–13,700 rad induces attenuation while at the same time assuring sufficient immunogenic response.A dose of 100,000 oocysts or more per bird is required to produce immunity. The optimum irradiation dose increases with the immunizing dose. It was concluded that the development of an irradiated vaccine is possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1972.tb03432.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Goitre and the Iodine Content of Cow's Milk (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 973-974 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In addition to the local differences, a seasonal variation, roughly corresponding inversely to the milk yield, was observed. Therefore, it is essential to make the period of collection of the milk samples as short as possible in order to get strictly comparable results. In the present ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174973b0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Analysis of Milk in Deficiency Diseases and Intoxications of Cattle (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 974-974 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nevertheless, in the Netherlands some successful attempts have been made to obtain information by other methods. Thus examination of urine has been shown to offer an insight into the ingestion of potassium, sodium, chlorine and sulphate by cows at pasture or stall-fed1. Information about iodine ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174974a0
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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