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  • 1
    Electronic Resource
    Electronic Resource
    Evidence for an Empty Core in a Bacterial Flagellum (1973)
    [s.l.] : Nature Publishing Group
    Nature 241 (1973), S. 542-543 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Flagellar filaments grow at the end distal to the bacterium, and flagellin is synthesized on ribosomes within the cell; these observations therefore raise the question of how the flagellin molecules are transported to the site of assembly. Kerridge1 considered that it is most improbable that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/241542a0
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  • 2
    Electronic Resource
    Electronic Resource
    Superposition Effects in Multiple-Beam Interference Fringes (1951)
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 861-862 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Fizeau fringes given by a pair of flats, placed at a small angle to each other, are straight, lying parallel to the edge of the wedge. If the flats are silvered and the monochromatic illumination is correctly eollimated, the fringes are formed by * Now at Strangeways Research Laboratory, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/168861a0
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  • 3
    Electronic Resource
    Electronic Resource
    Action of Saponin on Biological Cell Membranes (1962)
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 953-955 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ELEGANT electron micrographs recently published by Dourmashkin, Dougherty and Harris1 demonstrated the presence of holes or pits in the surface membranes of Rous sarcoma viruses, erythrocytes and tissue cells after treatment with saponin. When a sufficiently high concentration of saponin was used, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/196953a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Spore-like Structures in the Tubercle Bacillus (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 544-544 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In later stages of development, under certain conditions, the avian bacilli had a very different internal structure. When grown as slide cultures on thin chicken plasma embryo extract clots, they did not all divide directly by transverse fission ; some of them elongated into filaments, and round ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178544a0
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  • 5
    Electronic Resource
    Electronic Resource
    A New Embedding Medium for Electron Microscopy (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 803-803 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Attempts have been made to minimize these distorting effects by modifying the methacrylate procedure2, but only with partial success. The substitution of a different embedding medium seems desirable. The possible usefulness of the epoxy resins for the preparation of ultra-thin sections of bacteria ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178803a0
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  • 6
    Electronic Resource
    Electronic Resource
    Action of Antibiotics on Avian Tubercle Bacilli studied with the Electron Microscope (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 211-212 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A preliminary experiment was carried out to compare growth on the grids with growth directly on the medium. Grids inoculated with avian bacilli were placed on a Lowenstein plate and examined daily. At the same time, uninoculated grids were laid face downwards on the growth on a Lowenstein plate and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/171211a0
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  • 7
    Electronic Resource
    Electronic Resource
    The fine structure of micrococcus radiodurans (1965)
    Springer
    Archives of microbiology 51 (1965), S. 267-289 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The fine structure of the radiation-resistant bacterium, Micrococcus radiodurans, isolated by Anderson, was studied by electron microscopy of intact and disrupted cells using thin sectioning and negative staining techniques. The cytoplasm and nuclear structures are normal, but the cell wall and sheath are more complex than any so far described for a bacterium. The surface consists of four distinct layers, each having a characteristic fine structure, one of which has been tentatively identified as that responsible for maintaining the rigidity of the cells. Striations with a periodicity of 175 to 200 Å are visible in thin sections of this layer, and a pseudo-hexagonal array of dark “holes” is seen in surface view of negatively-stained fragments. It is concluded that this layer is the main structural element of the cell wall of M. radiodurans. The other three layers of the surface have not been clearly located in thin sections; one of these layers has a well-defined pattern of hexagonally arranged units similar to that observed in Spirillum serpens by Murray but with different dimensions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00408143
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  • 8
    Electronic Resource
    Electronic Resource
    Electron microscopy of negatively-stained lipids (1967)
    Springer
    Protoplasma 63 (1967), S. 208-211 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Conclusions The present studies appear to confirm previous suggestions (Baker 1958) that some of the fixatives used for the study of membranes may not give an adequate preservation of the lipid components unless a sufficient concentration of calcium is present. These experiments are being continued, and we plan to investigate any changes that may occur during subsequent dehydration and embedding processes. It is hoped to preserve the helices so that they may be studied by thin-sectioning techniques, since a procedure that is satisfactory for these helices may also be of value in the examination of thin sections of biological membranes. Furthermore, as the helical structures appear to contain globular micelles of phospholipid, 40 to 50 Å in diameter (Lucy and Glauert 1964), continued investigation of these structures may also shed light on the formation, stability and function of globular micelles of lipid within natural membranes (Lucy 1964).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01248036
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