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'Electron Microscopy' in keywords Facet   section ZfN Section C:Volume 031  [X]
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1976 (3)
1Author    Riidiger RiehlRequires cookie*
 Title    Eine A Special Attaching-Mechanism between the Cortex radiatus externus and the Follicle Epithelium of the Oocytes of Gobio gobio  
 Abstract    besondere Haftvorrichtung zwischen Cortex radiatus externus und Follikel­ epithel der Oocyten von G obio g o b io (L). The cortex radiatus externus and the follicle epithelium of the freshwater teleost Gobio gobio are firmly attached together by a special attaching-mechanism. The apical surface of the plugs of the cortex radiatus externus has recesses and excavations which fit in the short projections of the follicle cells and prevent moving of these cells on the egg mem­ branes. This attaching-mechanism also assists in fastening the oocytes (eggs) on the substrate. 
  Reference    (Z. Naturforsch. 31c, 628 [1976]; eingegangen am 23. Juni 1976) 
  Published    1976 
  Keywords    Electron Microscopy, Gobio gobio, Oocytes, Cortex radiatus externus, Attaching-Mechanism 
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 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0628_n.pdf 
 Identifier    ZNC-1976-31c-0628_n 
 Volume    31 
2Author    Marvin Stromer, Wilhelm HasselbadhRequires cookie*
 Title    Fusion of Isolated Sarcoplasmic Reticulum Membranes  
 Abstract    Fragmented sarcoplasmic reticulum (FSR) vesicles from rabbit muscle were suspended in 1.5 — 5% glycerol solutions and were pelleted onto aluminum foil disks in a modified centrifuge tube. Examination of these pellets in the electron microscope after drying for 2 — 2.5, 4 — 5.5, and 21 hours revealed a progression of changes. First, distances between individual, round vesicles decreases. Next, somewhat flattened vesicles establish limited areas of contact with adjacent vesicles. Finally, vesicle fusion occurs and extended areas of double bilayers are formed. A water loss-time interaction appears to be needed for the fusion process. A Hg-phenyl azoferritin com­ pound was used as a marker to identify intra-and extra-vesicular space in the fused samples. Quantitative measurements of birefringence during imbibition of pellet slices in a graded series of glycerol solutions indicates a steadily increasing amount of birefringence until 60 — 80% glycerol (»/ = 1.41 —1.43) is readied. The plateau seen in this part of the curve is again followed by steadily increasing birefringence at higher glycerol concentrations. This interruption in the birefringence curve is presumably due to a matching of the refractive indices of the glycerol solution and a lipid component in the membranes. 
  Reference    (Z. Naturforsch. 31c, 703 [1976]; received August 23 1976) 
  Published    1976 
  Keywords    Membrane Fusion, Sarcoplasmic Reticulum, Glycerol, Electron Microscopy, Polarizing Microscopy 
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 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0703.pdf 
 Identifier    ZNC-1976-31c-0703 
 Volume    31 
3Author    U. P. FringeliRequires cookie*
 Title      
  Reference    (Z. Naturforsch. 31c, 746 [1976]; received August 17 1976) 
  Published    1976 
  Keywords    Electron Microscopy, Radiation Damage, Polypeptide Monolayers, Infrared Dichroism, Conformational Changes 
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 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0746_n.pdf 
 Identifier    ZNC-1976-31c-0746_n 
 Volume    31