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  • 1
    Electronic Resource
    Electronic Resource
    The fine structure of the ependymal surface of the recessus infundibularis in the rat (1977)
    Springer
    Anatomy and embryology 151 (1977), S. 241-265 
    Details
    ISSN: 1432-0568
    Keywords: Scanning E.M. ; Third ventricle ; Neurohypophysis ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The surface of the recessus infundibularis of the third ventricle has been studied with the scanning and transmission technique in normal and experimental material. Surface specializations such as microvilli, craters and areas of discontinuous lining are described. Supraependymal cells and fibres have been found; some of these cells form wide-meshed networks. The supraependymal fibres may be regular or varicose; the former seem to perforate the ependyma. With the transmission electron microscope the supraependymal cells are divided into three categories: nerve cells, lymphocytes and “dense cells”. Two fibre populations are distinguished: thin profiles (nerve fibres) and thick profiles (nerve terminals). Axosomatic and axoaxonic synapses are described. Synapses between supraependymal fibres and ependyma cells have also been found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318929
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    New Lineal Immunoenzymatic Assay for Simultaneous Detection of p24 Antigen and HIV Antibodies (1999)
    Springer
    European journal of clinical microbiology & infectious diseases 18 (1999), S. 591-594 
    Details
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The aim of this study was to evaluate a new lineal immunoenzymatic assay for the simultaneous detection of HIV-1/HIV-2 antibodies and p24 antigen. A total of 320 serum samples were obtained from individuals infected by HIV (HIV 1, n=183; HIV 2, n=2), individuals with risk factors for HIV infection (n=49), recipients of multiple transfusions (n=40), and blood donors (n=46). The Western blot for detection of HIV antibodies and an enzyme immunoassay for detection of p24 antigen, both established techniques, were used for direct comparison. In cases of recent infection, p24 antigen was generally detected at the same time by the lineal test and the established assay. The p24 antigen sensitivity was about 200 pg of HIV antigen per milliliter. The results seem to indicate that the new test could be used with sufficient reliability for screening biological samples (sensitivity, 99.5%; specificity, 94.8%). Use of the lineal immunoenzymatic assay may shorten the amount of time needed to diagnose acute infection with HIV to approximately 2 weeks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100960050353
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Les phases précoces de la formation des cils et le problème de l'origine du corpuscule basal (1968)
    Springer
    Cell & tissue research 87 (1968), S. 46-68 
    Details
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Developing cilia and non-ciliated centrioles are both present in the rat choroid cell studied with the electron microscope. The development of the cilium begins with the appearance of a thick-walled vesicle close to the centriole or in contact with it. Very soon this vesicle lines the distal extremity of the centriole. The growing ciliary shaft invaginates the vesicle, forming a temporary ciliary sheath. This sheath isolates the growing cilium from its environment. Degenerating ciliary shafts are by no means rare. They are interpreted as evidence of a biological cycle of the cilia. Club-shaped forms are also frequent. Non-ciliated centrioles are sometimes in contact with striated structures consisting of alternating dark and light bands, separated by a distance of 600 Å. These formations (treillis) are different from the “pericentriolar satellites”. On morphological grounds, they might be considered as centriole precursors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00326560
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    Paper (German National Licenses)
    Fulltext
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