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  • 1
    Electronic Resource
    Electronic Resource
    Cytochemical and ultrastructural studies of Candida albicans (1984)
    Springer
    Archives of microbiology 139 (1984), S. 221-224 
    Details
    ISSN: 1432-072X
    Keywords: Adherence ; Buccal cells ; Candida albicans ; Cell wall coat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ultrastructural modifications of the cell wall coat of Candida albicans during adherence to host cells were investigated using various cytochemical techniques. Attachment of the fungus to buccal epithelial cells appeared to involve spatial rearrangement of their cell wall surface. In particular adhering yeast developed a fibrogranular surface layer visualized by the periodic acid — thiocarbohydrazide silver proteinate technique (a polysaccharide detectron technique); Concanavalin A binding sites detected on their cell wall coat were highly increased. Attachment of yeasts to epithelial cells appeared mediated by fibrillar structures or polysaccharidic granules distributed on the cell wall coat. But free extra-cell wall material containing mannoproteins released from the yeast surface suggested additional mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402004
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  • 2
    Electronic Resource
    Electronic Resource
    Protein p126: a parasitophorous vacuole antigen associated with the release of Plasmodium falciparum merozoites
    Amsterdam : Elsevier
    Biology of the Cell 64 (1988), S. 215-221 
    Details
    ISSN: 0248-4900
    Keywords: Plasmodium falciparum ; electron microscopy ; immunization ; monoclonal antibodies ; proteolysis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0248-4900(88)90080-9
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  • 3
    Electronic Resource
    Electronic Resource
    Form-factor measurements on chromium with high-energy synchrotron radiation (2000)
    Springer
    The European physical journal 14 (2000), S. 63-72 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) - 78.70.Ck X-ray scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Results of high-energy magnetic X-ray diffraction on pure antiferromagnetic chromium are presented. The temperature dependence of the propagation vector of the spin-density wave (SDW) and the strain-wave (SW) could be reproduced. The temperature dependence of the magnetic integrated intensity could be measured in the transversally as well as in the longitudinally polarised SDW phase. The magnetic form-factor has been determined in the transversally polarised SDW phase with five magnetic satellites. For the first time a spin-orbit separation has been performed by comparing X-ray to neutron data. The small orbital contribution to the magnetisation density turns out to be negligible, in agreement to our relativistic band-structure calculations. In addition, measurements of strain-wave reflections have been undertaken, and the results complement previous studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050107
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  • 4
    Electronic Resource
    Electronic Resource
    Application d'une méthode d'extraction des lipides aux parois des blastospores de Candida albicans (1985)
    Springer
    Mycopathologia 92 (1985), S. 141-147 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé Une méthode d'extraction physico-chimique des lipides a été appliquée à des blastospores entières de C. albicans, préalablement à leur étude en microscopie électronique à transmission. Les résultats permettent de supposer une localisation très superficielle des lipides liés à d'autres composants, en particulier peptidopolysaccharidiques, ce qui est en accord avec les données de la littérature. La méthode à également permis l'observation de structures microfibrillaires pariétales. Il s'agit surtout, d'une part, de fibrilles d'environ 50 Å de diamètre, situées dans les couches moyennes, également observables, après mise en oeuvre d'une technique d'extraction de polysaccharides sur cellules entières, et qui ont été assimilées à des fibrilles de ß 1–3 glucanes; d'autre part de fibrilles de 120 À de diamètre, situées au centre du septum de la cicatrice de bourgeonnement et qui ont été assimilées à des fibrilles de chitine.
    Notes: Abstract A chemical method for lipid extraction has been applied to Candida albicans blastospores previously to their examination by transmission electron microscopy. The results led to the concept of a superficial location of lipids bounded to the peptidopolysaccharidic matrix of the cell wall. This lipid extraction also allowed us to describe cell wall microfibrillar structures. Two types of microfibrills have been particularly identified: (1) microfibrils of approximately 50 Å in diameter, involved in a network of the cell wall intermediate layers and supposed to correspond to ß 1–3 glucans; (2) fibrillar structures of 120 Å in diameter, similar to chitin microfibrils, observed in the bud scar septum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00437625
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  • 5
    Electronic Resource
    Electronic Resource
    Etude experimentale de l'immunite a mediation cellulaire au cours des dermatophyties (1978)
    Springer
    Mycopathologia 63 (1978), S. 81-88 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé A différents temps après le début de l'infection, puis de la réinfection du cobaye par T. mentagrophytes, furent pratiqués des tests de détection de l'hypersensibilité retardée in vivo (intra dermo réaction) et in vitro (inhibition de la migration des macrophages péritonéaux) ainsi qu'un test destiné à mettre en évidence la secrétion de lymphotoxines actives vis à vis des éléments fongiques. Les résultats obtenus concernant l'évolution cinétique des réactions plaident en faveur de la plus grande sensibilité du test d'inhibition de la migration des macrophages pour la détection de l'hypersensibilité retardée. Ils confirment le rôle prépondérant des réactions de type cellulaire dans la résistance et soulignent la particularité de ce modèle expérimental oú se manifestent des phénomènes d'immunité locale. L'ensemble de nos résultats et, notamment, la démonstration de l'existence de médiateurs d'origine lymphocytaire toxiques pour les spores de T. mentagrophytes sont discutés dans le cadre de la réaction cutanée à l'agression parasitaire.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00441252
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  • 6
    Electronic Resource
    Electronic Resource
    Étude cinétique de l'hypersensibilité de type retardé dans la candidose expérimentale de la souris (1974)
    Springer
    Mycopathologia 54 (1974), S. 475-483 
    Details
    ISSN: 1573-0832
    Keywords: Immunité cellulaire ; Hypersensibilité retardée ; Inhibition de létalement des macrophages ; Candidose murine ; Cellular immunity ; delayed hypersensitivity ; macrophage spreading inhibition ; murine candidiasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Mice were inoculated with different quantities of blastospores ofCandida albicans by subcutaneous or intravenous ways. Delayed hypersensitivity was then studied during the course of infection by means of the inhibition of macrophage spreading test. In the same time retrocultures were done from kidney material, target organs in the experimental candidiasis. The results obtained in this way enabled the authors to think that cellular immunity plays a role in this experimental model as described by Mackaness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02050053
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  • 7
    Electronic Resource
    Electronic Resource
    Etude ultrastructurale de la spermatogènese chezTrichinella spiralis Owen 1835 (Nématode trichuroïde) (1981)
    Springer
    Parasitology research 64 (1981), S. 207-215 
    Details
    ISSN: 1432-1955
    Keywords: Ultrastructure ; Spermatogenesis ; Nematoda ; Trichinella spiralis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé L'étude ultrastructurale de la spermatogénèse chezT. spiralis a permis de retrouver chez cette espèce les caractères morphologiques observés dans la lignée mâle chez la plupart des Nématodes, c'est-à-dire absence de flagelle chez le spermatozoïde, absence de reconstitution de l'enveloppe nucléaire après divisions méiotiques, structure atypique du centriole. Elle a permis de situer le spermatozoïde par rapport aux classifications antérieurement proposées.
    Notes: Abstract The ultrastructural study of spermatogenesis inT. spiralis demonstrated the main characteristics of the male germ cells in the class Nematoda, i.e. lack of flagella, lack of reconstitution of the nuclear envelope after the meiotic divisions, and atypical structure of the centriole. The spermatozoon ofT. spiralis was compared with previous classifications of the Nematoda spermatozoa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00930498
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  • 8
    Electronic Resource
    Electronic Resource
    In vitro growth and chloroquine sensitivity of Plasmodium falciparum (FCR-3 strain) in red blood cells containing HbC (1987)
    Springer
    Parasitology research 73 (1987), S. 306-312 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Freshly drawn AA and CC red cells were more suitable for in vitro development of Plasmodium falciparum than red blood cells (RBC) stored for 13 days before use. Growth rate inhibition in CC red cell cultures reached 31% in freshly drawn red cells and 57% in aged red cells of the same donor. Ultrastructural studies of CC cells revealed very important irregular cavities sometimes occupied by a granular content. Parasites in CC cells were generally normal but occasionally showed signs of functional impairment. P. falciparum growing in CC red cells was less sensitive in vitro to chloroquine than in AA red cells. This phenomenon may be explained either by the type of the hemoglobin of the host cell or to abnormal haematological parameters of the HbC homozygote donor, particularly the high proportion of neocytes. As metabolism of reduced glutathione is higher in young RBC and as chloroquine lyses parasitized RBC by reducing the regeneration capacities of this compound, the increased rate of young RBC in the CC red cell population was probably related to the decreased chloroquine sensitivity of P. falciparum growing in these cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00531083
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  • 9
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    Ab initiocalculation of Kerr spectra for semi-infinite systems including multiple reflections and optical interferences (2002)
    American Physical Society
    Details
    Publication Date: 2002-04-04
    Print ISSN: 0163-1829
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society
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  • 10
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    Describing surfaces: Semi-infinite versus thin film approaches (2009)
    American Physical Society
    Details
    Publication Date: 2009-08-27
    Print ISSN: 1098-0121
    Electronic ISSN: 1550-235X
    Topics: Physics
    Published by American Physical Society
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