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  • Blackwell Publishing Ltd  (6)
  • American Society of Hematology  (2)
  • Copernicus
  • 1975-1979
  • 1955-1959  (8)
  • 1957  (8)
Collection
Publisher
Years
  • 1975-1979
  • 1955-1959  (8)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Growing Ochromonas malhamensis Above 35°C. (1957)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 4 (1957), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Ochromonas malhamensis (Pringsheim strain) can be grown above 35.5°C.; below 35°, the previous chemically defined medium supports dense growth. The B12 and thiamine requirements rise steeply with temperature, and growth promotion by folic acid emerges; folic acid spares the enhanced B12 requirement. B12 is spared also, perhaps wholly bypassed, by purines + pyrimidines + amino acids (below 35°, exogenous purines, pyrimidines, and folic acid have little effect). Requirements also emerge for glycine (spared by serine), valine and isoleucine (their ratio is critical; leucine and threonine assist in maintaining a good balance), and, at very slightly higher temperatures, phenylalanine, tryptophan, cystine, and lysine. Requirements for Mg, Fe, Zn, and Mn appear to rise steeply with temperature; metal toxicities have to be circumvented carefully. The proportion of histidine + arginine to carbohydrate has to be increased, and a Krebs-cycle component such as succinic acid becomes stimulatory. At 36.3–36.7°, a further supplement of crude natural materials such as an autoclaved suspension of Ochromonas cells is needed. Relevance of these findings to fever stress in vertebrates, general mitochondrial function, and repair of radiation damage, is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1957.tb02518.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A New Vector of Haemoproteus colmubae in England (1957)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 4 (1957), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Haemoproteus columbae of English wood pigeons (Columba palumbus palumbus L.) was found to undergo sporogony in Ornithomyia avicularia. It is suggested that this insect is a vector of H. columbae, in spite of the failure of six attempts to transmit the haemosporidian to uninfected domestic pigeons (C. livia var. domestica) by the bite, or injection, of infected O. avicularia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1957.tb02509.x
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  • 3
    Electronic Resource
    Electronic Resource
    STUDIES ON THE ROOT DEVELOPMENT OF HERBAGE PLANTS (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 12 (1957), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The influence of defoliation on the root, stubble and herbage weights of perennial ryegrass during establishment was studied on spaced plants in the greenhouse and field.In the greenhouse trial the rate of root elongation was reduced by a single defoliation. In both the field and greenhouse, cutting reduced the number of roots and tillers per plant but increased the number of roots per tiller. A few weeks after defoliating plants in the field there was a lower root weight on the cut plants than on the uncut. Eventually the influence of a single cut disappeared, but if the cutting was in the laie summer or autumn the plants commenced the winter with a smaller amount of root and stubble, and this appeared to have a deleterious effect on the earliest spring growth.Herbage growth in March and April was positively correlated with both root and stubble weights in the previous November.As the number of cuts during the establishment period (March-November) was increased from 0–4 the root and stubble weight per plant progressively decreased.The root and stubble weights decreased during the winter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1957.tb00099.x
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  • 4
    Electronic Resource
    Electronic Resource
    STUDIES ON THE ROOT DEVELOPMENT OF HERBAGE PLANTS (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 12 (1957), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effects of cutting on the root, stubble and herbage growth of perennial ryegrass during establishment was studied under sward conditions.Although a few weeks after a cutting treatment there was a smaller root weight on the cut than on the uncut swards, this difference eventually disappeared.By the autumn the frequently cut swards had considerably more plants and tillers per unit area than the uncut plots. As a result of these changes in plant density the root weight per unit area of the sward was not decreased by increasing the cutting frequency during establishment. However, the root weight per plant (and per tiller) was decreased by increases in the cutting frequency.The root and stubble weights increased during the spring, summer and early autumn of the first year and decreased during the winter. In the second season the root weight increased to a maximum in December whilst the stubble weight rose during the spring and summer and decreased after September.Although the percentage of total soluble carbohydrate was consistently higher in the stubble than the roots or herbage the quantity was similar in both roots and stubble, and in these organs the major soluble carbohydrate was fructosan.During the winter both the percentage and the total quantify of soluble carbohydrate in the stubble and roots decreased considerably.Herbage growth in February and March was not correlated with the root weight per unit area in the previous autumn but was positively correlated with the root weight per plant. The highest herbage yield in the early spring came from plots which were leniently treated in the previous autumn: these plots had a low plant and tiller density but the root weight per plant or per tiller was relatively high.In April the rate of herbage growth tended to be positively correlated with the sward density. In May and June the highest herbage yields came from the open swards. It was suggested that during this latter period moisture, and/or nitrogen, may have been the limiting factor, so that the open sward benefited from less interplant competition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1957.tb00972.x
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  • 5
    Electronic Resource
    Electronic Resource
    STUDIES ON THE ROOT DEVELOPMENT OF HERBAGE PLANTS (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 12 (1957), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Various methods of root sampling are reviewed and discussed in relation to the type of information required. The root sampling techniques at the Grassland Research Institute are described and examples of sampling errors are given. Details of a root washing machine are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1957.tb00091.x
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  • 6
    Electronic Resource
    Electronic Resource
    WIREWORM AND SLUG DAMAGE TO WARE POTATOES, 1954–56 (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 6 (1957), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1957.tb00795.x
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  • 7
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    In Vitro Incorporation of C14—DL-Leucine into Normal and Leukemic White Cells (1957)
    American Society of Hematology
    Details
    Publication Date: 1957-09-01
    Description: Normal white blood cells and cells from patients with leukemia are able to incorporate C14-DL-leucine into proteins in vitro. Cells from individuals with chronic myelogenous leukemia were able to incorporate significantly greater amounts of the amino acid, and they were able to maintain this incorporation for a longer period of time than the control cells. Both types of cells had the same in vitro survival time of four days, following storage at 3 C. The incorporation was partially decreased in the presence of dinitrophenol, as well as in an atmosphere of nitrogen.
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
    Published by American Society of Hematology
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  • 8
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    The Combined Use of Typhoid Vaccine and P32 Labeling to Assess Myelopoiesis (1957)
    American Society of Hematology
    Details
    Publication Date: 1957-06-01
    Description: 1. The intravenous administration of killed typhoid organisms to dogs results in the development of a severe leukopenia which is followed by a marked leukocytosis. 2. The myelopoietic response of dogs to typhoid injections is quite similar to the response following leukopheresis. 3. Leukocyte DNA-P32 studies indicate that in response to typhoid stimulation, as with leukopheresis, the bone marrow constitutes the main reservoir for granulocytes contributing to peripheral blood leukocytosis. 4. Evidence is presented that, under these experimental conditions, leukocytes, after once having left the vascular tree, are unable to re-enter in any significant numbers. 5. The use of typhoid vaccine to stimulate leukocytosis combined with the use of P32 to measure the fate of cells released from the marrow is presented as an accurate and reasonably simple method to measure certain aspects of myelopoiesis in the experimental animal.
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
    Published by American Society of Hematology
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