Results 171 to 180 of about 11,358 (214)

Scanning transmission electron microscopy of biological macromolecules

Ultramicroscopy, 1978
Our aim is to use Scanning Transmission Electron Microscopy (STEM) for research on biological macromolecules. Preliminary experiments have been carried out on a Philips EM 300 (equipped with a high resolution stage and normal hairpin cathode) with a STEMattachment.
W. Tichelaar, G.T. Oostergetel, J. Haker, E.F.J. Van. Bruggen   +3 more
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Spot-Scan Imaging in Transmission Electron Microscopy

Science, 1991
The determination of the structure of proteins and other organic materials by transmission electron microscopy is a rapidly developing field. Obtaining high-resolution images of these radiation-sensitive specimens has, until recently, been problematic. The development of spot-scan imaging, in which the electron beam is focused to a spot with a diameter
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Scanning and Transmission Electron Microscopy of Calcified Tissues*,†

Biomaterials, Medical Devices, and Artificial Organs, 1975
Some recent innovations have been utilized to extend studies of the structure of calcified tissues on the ultra- and microstructural levels of organization. The introduction of hydrazine as a replacement for the conventionally used ethylene diamine to deproteinize calcified tissue samples has resulted in the acquisition of previously unobtainable ...
D B, Swedlow, P, Frasca, R A, Harper, J L, Katz   +3 more
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Event-responsive scanning transmission electron microscopy

Science
An ever-present limitation of transmission electron microscopy is the damage caused by high-energy electrons interacting with any sample. By reconsidering the fundamentals of imaging, we demonstrate an event-responsive approach to electron microscopy that delivers more information about the sample for a given beam current. Measuring the time to achieve
Jonathan J. P. Peters, Bryan W. Reed, Yu Jimbo, Kanako Noguchi, Karin H. Müller, Alexandra Porter, Daniel J. Masiel, Lewys Jones   +7 more
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Scanning and transmission electron microscopy of the rat kidney

American Journal of Anatomy, 1974
AbstractThis study utilized scanning and transmission electron microscopy of renal tissue to provide new information on the gross and microscopic structure of the kidney. The luminal surface of the proximal convoluted tubule was characterized not only by the border of microvilli, but also by crater‐like depressions, and circumferential folds. In tissue
R E, Bulger, F L, Siegel, R, Pendergrass
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Scanning transmission electron microscopy of biological macromolecules

Ultramicroscopy, 1980
The practical usefulness of a STEM (Scanning Transmission Electron Microscope) for the study of the structure of biological macromolecules has been investigated using a STEM attachment connected to a TEM (Transmission Electron Microscope), which in one case was equipped with a tungsten hairpin cathode, and in the other case with a field emission gun ...
Tichelaar, W., Oostergetel, G.T., Haker, J., van Heel, M.G., van Bruggen, E.F.J.   +4 more
openaire   +3 more sources

Scanning and transmission electron microscopy of odontogenic keratocysts

Oral Surgery, Oral Medicine, Oral Pathology, 1975
The ultrastructural characteristics of the superficial cells of the epithelial lining of odontogenic keratocysts were studied. Examples of both the parakeratinized type and the less common orthokeratinized variant were examined. Scanning electron microscopy reveals that the morphology of the two cyst types is distinctly different.
G P, Wysocki, J P, Sapp
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Transmission and Scanning Electron Microscopy of Peripheral Nerves

Hand Clinics, 1986
Electron microscopy of peripheral nerve tissue by SEM and TEM facilitates a better understanding of the complex nerve architecture described by early light microscopists. Details of axonal morphology and the Schwann cell/myelin sheath complex in healthy and diseased nerves have been described in the literature.
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High-Resolution Scanning Transmission Electron Microscopy

Science, 1983
The high-resolution scanning transmission electron microscope is being used in a growing number of laboratories. This article provides a general overview of the instrument and its capabilities for readers who are unfamiliar with it.
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Scanning transmission electron microscopy of thin specimens

Ultramicroscopy, 1976
The intensity distributions in bright field and dark field images of thin specimens obtained in scanning transmission electron microscopy are evaluated in terms of the phase of object approximation for coherent and partially coherent illumination.
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