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  • Nature Publishing Group  (3)
  • Blackwell Publishing Ltd  (2)
  • Oxford University Press
  • 1970-1974  (6)
  • 1965-1969
  • 1970  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Metroeconomica 22 (1970), S. 0 
    ISSN: 1467-999X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 225 (1970), S. 464-467 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To determine whether the hypereholesterolaemia occurring in the hypophysectomized rat was solely the result of impaired thyroid function, we first measured the serum cholesterol changes taking place in five groups of ten mature male rats (Long Evans strain) after (a) simple thyroidectomy (T), (6) ...
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  • 3
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Zusammenfassung. Es wurde die DNS- und RNS-Biosynthese von Neurospora crassa Wildstamm 3a6A unter Einfluss unterschiedlicher Konzentrationen von 2,4-D, Amitrol, Atrazin, Chlorpropham und Chlorflurenol untersucht. Die Variation der Herbizide erfolgte von 10−3 bis 10−6 M. Der in beliifteten Kulturen gezüchtete Pilz ist gegenuber Chlorpropham am empfindlichsten. Bei 10−3 M ist die Toxizitätsgrenze überschritten und das Wachstum vollständig gehemmt. 2,4-D hat in einer Konzentration von 10−3 M den grössten Einfluss auf die Nucleinsäure-Biosynthese. Die DNS-Werte erhöhen sich gegenüber der Kontrolle aiif 140%. Unter Einfluss von Atrazin (10−3 M) scheint besonders die Protein-Synthese stimuliert zu werden. Die Zunahme beträgt hier fast 140%. Allgemein haben die untersuchten 5 Herbizide einen relativ geringen Einfluss auf die Nucleinsäure-Biosynthese. Ein grösserer Effect ist nur bei der höchsten Herbizid-Konzentration von 10−3 M ZU erkennen. Der Pilz ist gegenüber diesen Herbiziden wenig empfindlich. Effets des herbicides 2,4-D, aminotriazole, atrazine, chlorprophame et chlorflurénol sur la biosynthése de l'acide nucléique chez un ascomycéte; Neurospora crassaRésumé. La biosynthése de l'ADN et de l'ARN fut déterminée chez la race sauvage 3a6A de Neurospara crassa, cultivé sur des milieux contenant du 2, 4-D, de l'aminotriazole, de l'atrazine, du chlorprophame et du chlorflurenol à des concentrations de 10−3 a 10−6 M. En culture aéréc, JV. crassa fut plus sensible au chlorprophame et à 10−3 M. sa croissance fut complétement inhibée. L'effet le ptus marqué sur la biosynthésc de I'acide nucléique fut observé avec lc 2,4-D à 10−3 M. concentration qui porta la teneur en ADN à 140% de celle du téemoin. Avec l'atrazine à 10−3 M. la synthése des proteines en particulier sembla stimulée jusqu’à atteindre environ 140% du témoin. En général, les cinq herbicides etudids n'eurent qu'un effet relativement faibie sur la biosynthése de l'acide nucléique; seule la concentration la plus forte, 10−3 M. cut un effet appreciable. N. crassa ne se montra pas tres sensible à ces herbicides. Effects of the herbicides 2,4-D, aminotriazole, atrazine, chlorpropham and chlorflurenol on nucleic-acid biosynthesis in the ascomycete Neurospora crassaSummary. Biosynthesis of DNA and RNA was determined in Neurospora crassa wild race 3a6A grown in cultures containing 2,4-D, aminotriazole, atrazine, chlorpropham and chlorflurenol in concentrations of 10−3-10−6 M. In aerated culture, N. crassa was most sensitive to chlorpropham and at 10−3 M growth was completely inhibited. The greatest effect on nucleic-acid biosynthesis was given by 2,4-D at 10−3 M which increased the DNA value to 140% of the control. With atrazine at 10−3 M. protein synthesis in particular appeared to be stimulated, to almost 140% of the control. In general, the five herbicides studied had a relatively slight effect on nucleic-acid biosynthesis; only with the highest concentration of 10−3 M was the effect appreciable. N. crassa was not very susceptible to these herbicides.
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 464-465 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recent observations indicate that other endocrine glands are concerned in cholesterol metabolism. We have demonstrated4 that pituitary growth hormone is important in normal cholesterol metabolism in the rat. Because the secretion of growth hormone soon ceases in the absence of circulating thyroid ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 1249-1250 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The organism was grown in 500 ml. of modified medium No. 2 of Gledhill and Casida1casein hydrolysate (Oxoid) substituted for casamino-acids (Difco)in 2 1. flasks incubated at 30 C for 7 days. Cells were centrifuged, washed in 0.025 M phosphate buffer (pH. 7.4), then resus-pended in the same buffer ...
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  • 6
    Publication Date: 1970-05-01
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
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