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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 89 (1992), S. 122-122 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A rare polymorphism of the probe p20 in the Duchenne muscular dystrophy gene is reported.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 123 (1990), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The initial lymph vessels, the lymph capillaries and precollectors, are difficult to detect in normal skin using routine histological methods. A method is described in which specimens of the skin are fixed in an expanded condition. In 1.05 μm thick plastic-embedded sections the dilated lymph vessels of the skin can be demonstrated. The dermal lymph vessel network can be seen following the subepidermal injection of a coloured solution. The endothelial cells and subendothelial fibrous network can be examined using electron microscopy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 16 (1993), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 24 (1991), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 23 (1990), S. 99-104 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Two computer programs – one for calculation and graphical representation of the azimuthal angle ψ of all possible multiple reflections versus the wavelength λ (PSILAM) and one for the simulation of the Umweganregung-intensity variation during rotation of the crystal about the scattering vector of a `forbidden' or very weak reflection (PSIINT) – have been developed on the basis of the program UMWEG [Rossmanith (1985). Z. Kristallogr. 171, 253–254; (1986). Acta Cryst. A42, 344–348] with emphasis on suitability for inexpensive hardware. Examples of the excellent agreement between measurements and calculations and of the necessity of the combined application of both programs are given.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0584
    Keywords: Immune electron microscopy ; Hairy cell leukemia ; Trimeric glycoprotein ; Ber-ACT8 monoclonal antibody
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We describe a method which makes it possible to study the expression of the trimeric glycoprotein (TGP, CD 103) on the surface of hairy cells (HCs) by electron microscopy (e.m.). The monoclonal antibody (mAb) Ber-ACT8 was used to identify the TGP. By testing mucosa of the small intestine, we found that a prefixation incubation with Ber-ACT8 was necessary. After isolation with a density gradient, Ber-ACT8 incubation, and fixation, the peroxidase-anti-peroxidase (PAP) method was used to make the TGP visible. The HCs showed a clearly discernible stain on their surface, a fairly constant distribution of the TGP, and a very good ultrastructural preservation. This method makes it possible to demonstrate the TGP or other unfixable antigens by e.m.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-4994
    Keywords: Fluorescence ; multiplex dyes ; photochemistry ; time-resolved spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New dyes with characteristic fluorescence lifetimes have been developed for bioanalytical applications. Based upon the concept of “multiplex dyes,” we have designed rhodamine dyes with nearly identical absorption and emission spectral characteristics but different fluorescence lifetimes. Extending this principle to applications with laser diodes, new rhodamines with functional groups for covalent coupling of analytes have been developed. The new labels exhibit absortion and fluorescence beyond 600 nm and have a high quantum efficiency, even in aqueous buffer systems.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 103 (1990), S. 199-206 
    ISSN: 1437-1596
    Keywords: Early myocardial necroses ; C5b-9 complement complex, a necrosis marker ; Sudden cardiac death, morphological detection ; Frühe Herzmuskelnekrose ; C5b-9-Komplement-Komplex, Nekrosemarker ; “Sekundenherztod”, morphologischer Nachweis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Mit den bisher üblichen Färbemethoden war es kaum möglich, sicher zwischen frühen ischämischen Herzmuskelschäden, autolytischen Veränderungen and auch intaktem Myocard ohne Kernanschnitt zu unterscheiden. 1986 wurde erstmals eine immunhistochemische Methode vorgestellt, mit der C5b-9-Komplement-Komplex als Nekrosemarker am Kryostatschnitt dargestellt wurde. In Fortentwicklung dieses Verfahrens wird eine Technik zur Anwendung am Routine-Paraffinschnitt beschrieben: Mit dem C5b-9-Komplement-Komplex gelingt es insbesondere, disseminierte Einzel- und Gruppenfasernekrosen des Myocards exakt and autolyseunempfindlich darzustellen. Die Anwendung dieser Methode am Paraffinschnitt eröffnet den Weg zur Routinediagnostik sehr früher ischämischer Herzmuskelschädigungen selbst in Fallen von “Sekundenherztod”.
    Notes: Summary With conventional staining techniques it was nearly impossible to differentiate with certainty between early ischemic myocardial lesions, autolytic changes and intact myocardium without a nuclear section. In 1986 it was introduced an immunohistochemical method, which presented C5b-9 Complement Complex as a necrosis marker in cryostat sections. Our further development of this process has resulted in a technique for application on routine paraffin sections: C5b-9 Complement Complex is particularly well-suited for the exact and autolytically insensitive presentation of disseminated necroses of fiber bundels and single fibers of myocardium. The application of the technique on paraffin sections will lead to the use of the same in forensic medicine routine diagnostics of early ischemic myocardial lesions, even in cases of “sudden” cardiac death.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Protoplasma 166 (1992), S. 153-164 
    ISSN: 1615-6102
    Keywords: Conifers ; Endoplasmic reticulum ; Laser scanning microscopy ; Phloem transport ; Sieve areas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Confocal laser scanning microscopy (CLSM) and fluorochromes were used to visualize the assimilate-conducting sieve cells of conifers in vivo. When still nucleate, the cytoplasm of these cells shows streaming and occupies the cell periphery including the pitlike, thin wall regions where sieve areas would develop. During differentiation the nuclear fluorescence and the central vacuoles disappear. At maturity and after ER-specific staining the sieve areas are the most conspicuous character of sieve cells. Those linking two sieve cells are covered on either side with prominent amounts of ER, while those leading to a Strasburger (=albuminous) cell show fluorescence on the sieve-cell side only. Within the sieve-area wall fluorescence appears also in the common median cavity which is part of the symplastic path between sieve cells. Electron microscopy (EM) depicts the ER as complexes of densely convoluted tubules of smooth ER, equally on either side of a sieve area, provided that the fixation of this sensitive tissue is appropriate. Purposeful wounding causes a swelling and vesiculation of the ER-tubules which is visible in both CLSM and EM. Electron micrographs of ER-complexes at sieve areas -in this paper demonstrated in vivo -have often been argued to be artefacts, since they should raise flow resistance considerably and are not consistent with the Münch hypothesis on phloem transport. The implications of this location for phloem transport are discussed.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1132-1136 
    ISSN: 0044-2313
    Keywords: Cyanuric chloride ; FPDE values ; crystal structure ; chlorotrifluoro methane ; oxidative fluorinators ; ab initio computations ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Fluorination of Cyanuric Chloride and Low-Temperature Crystal Structure of [(ClCN)3F]+[AsF6]-The low-temperature fluorination of cyanuric chloride, (ClCN)3, with F2/AsF5 in SO2F2 solution yielded the salt [(ClCN)3F]+ [AsF6]- (1) essentially in quantitative yield. Compound 1 was identified by a low-temperature single crystal X-ray structure determination: R 3c, trigonal, a = b = 10.4246(23) Å, c = 15.1850(24) Å, V = 1429.1(4) Å 3, Z = 6, RF = 0.056, Rw = 0.076 (for significant reflections), RF = 0.088, Rw = 0.079 (for all reflections). Fluorination of neat (ClCN)3 with [NF4]+ [Sb2F11]- yielded NF3, CClF3, SbF3, N2 and traces of CF4. A qualitative scale for the oxidizing strength of the oxidative fluorinators NF4+ and (XCN)3F+ (X = H, F, Cl) has been computed ab initio.
    Notes: Durch Tieftemperaturfluorierung von Cyanurchlorid, (ClCN)3, mit F2/AsF5 in SO2F2-Lösung wurde [(ClCN)3F]+ [AsF6]- (1) in nahezu quantitativer Ausbeute dargestellt, aus SO2 bei Raumtemperatur umkristallisert und durch eine Tieftemperatur-Röntgenstrukturanalyse (-170°C) identifiziert: R 3c, trigonal, a = b = 10,4246(23) Å, c = 5,1850(24) Å, V = 1 429,1(4) Å3, Z = 6, RF = 0,056, Rw = 0,076 (für wesentliche Reflexionen), RF = 0,088, Rw = 0,079 (für alle Reflexe). Die Fluorierung von festem (ClCN)3 mit [NF4]+ [Sb2F11]- im Molverhältnis 1:2 lieferte NF3, CClF3, SbF3, N2 und Spuren an CF4. Eine qualitative Reihenfolge bezüglich der FPDE-Werte von NF4+ und (XCN)3F+ (X = H, F, Cl) wurde ab initio berechnet.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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