Results 201 to 210 of about 2,998 (248)

Hodgkin cells in freeze-fracture replicas

Virchows Archiv B Cell Pathology, 1988
Lymph nodes from six patients with Hodgkin's disease (three with the nodular sclerosing subtype, one with mixed cellularity and two with the lymphocyte-predominant subtype) were analysed by electron microscopy in freeze-fracture replicas and thin sections.
E, Kaiserling, H, Wolburg, K, Berg
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A Technique for Freeze-Fracturing of the Organ of Corti

Acta Oto-Laryngologica, 1985
A modification of the conventional method of freeze-fracturing is described. By the use of polyvinyl-alcohol, a high viscous fluid, the organ of Corti is better stabilized in the specimen holder. This fluid also facilitates a clean fracture through the organ of Corti proper and in a high number of cases gives a large replica void of contaminating ...
B, Engström, M, Hoffstedt, D, Bagger-Sjöbäck   +2 more
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Freeze-fracture of adrenal chromaffin granules

Neuroscience, 1977
Abstract Freeze-fracture replicas of bovine adrenal chromaffin granules show convex and concave fracture faces. The concave fracture faces are studded with 9 nm diameter particles (on average 950/μm 2 ) while the convex fracture faces are almost devoid of particles (approx 150/μm 2 ).
P A, Eagles, L N, Johnson, C, Van Horn, S, Bullivant   +3 more
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Freeze‐fracture for scanning electron microscopy

Journal of Microscopy, 1977
SUMMARYTwo different freeze‐fracture methods are explored for preparation of biological material for scanning electron microscopy. In the simpler method the tissues are first fixed and dehydrated. They are then frozen and fractured, and after thawing, critical‐point dried.
G H, Haggis, B, Phipps-Todd
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Freeze Fracturing of the Human Stria Vascularis

Acta Oto-Laryngologica, 1987
The stria vascularis is an important functional element in the mammalian cochlea. This special tissue is considered to be the source of the endocochlear potential and thus the driving force for the production of a receptor response to the auditory stimulus.
D, Bagger-Sjöbäck, B, Engström, L, Steinholtz, M, Hillerdal   +3 more
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Freeze‐fracture observations on mammalian oocytes

American Journal of Anatomy, 1985
AbstractFreeze‐fracture studies on mammalian oocytes have been hampered by the relatively small numbers of cells available at a given time as well as by difficulties encountered in effectively freezing these large, watery cells. We have nevertheless pursued this area because of the benefits of visualizing membrane faces involved in various fusion ...
J K, Koehler, J M, Clark, D, Smith
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Freeze-fracture morphology of nuclear pockets

Virchows Archiv B Cell Pathology Including Molecular Pathology, 1991
Nuclear pockets (NP) are found in numerous human tumours and in certain non-neoplastic cells. This study concerns the structure of NP in cells from two malignant rhabdoid tumours, one embryonal rhabdomyosarcoma, two centroblastic/centrocytic lymphomas, one centrocytic lymphoma and one Ki-1 lymphoma, as well as in normal neutrophils.
E, Kaiserling, H, Wolburg
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Freeze Fracture of Intact Plant Tissues

Stain Technology, 1982
A procedure for dissolving and handling replicas of cutinized leaves and other plant tissues is described. This technique yields comparatively large replicas which can include vascular tissue, epidermal cells and the cuticle. Dissolution of the tissue involves the sequential use of alcoholic KOH, sulfuric acid and chromic acid.
K A, Platt-Aloia, W W, Thomson
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Freeze-fracture of intact sarcotubular membranes

Journal of Ultrastructure Research, 1978
Pectoralis muscle from normal and dystrophic chickens was examined following preparation by the technique of freeze-fracturing. The intramembranous particle density of both the cytoplasmic and extracellular (luminal) faces of the junctional sarcoplasmic reticulum (SR), free SR, and T system of normal and dystrophic chickens was determined and subjected
L M, Crowe, R J, Baskin
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Freeze-fracture studies on lipids and membranes

Micron, 2001
Freeze-fracture electron microscopy is especially useful for investigation of lipid structures by the advantageous fracture course within hydrophobic zones. Freezing is, on the other hand, a restriction because the structures of lamellar and non-lamellar phase states with disordered acyl chains (L(alpha), H(II,) cubic) are difficult to preserve.
H W, Meyer, W, Richter
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