Read e-book online Membrane Morphology of the Vertebrate Nervous System: A PDF

By C. Sandri

ISBN-10: 0080861717

ISBN-13: 9780080861715

ISBN-10: 0444803939

ISBN-13: 9780444803931

Show description

Read or Download Membrane Morphology of the Vertebrate Nervous System: A Study with Freeze-etch Technique PDF

Similar neuroscience books

New PDF release: Animal Models of Movement Disorders

Using animal types is a key element of medical examine in different fields of drugs. This booklet vigorously examines the real contributions and alertness of animal types to the certainty of human circulate problems and may function a vital source for easy neuroscientists engaged in circulate issues learn.

Epilepsy: The Intersection of Neurosciences, Biology, - download pdf or read online

Epilepsy, probably the most ordinary neurological problems, impacts nearly 1% (greater than 60 million) of the world's inhabitants. In an predicted 20 million of those sufferers, seizures will not be managed even through a number of anti-seizure medications, and are super tricky to foretell. Epilepsy: The Intersection of Neurosciences, Biology, arithmetic, Engineering, and Physics seamlessly brings jointly the neurosciences, arithmetic, computational sciences, engineering, physics, and medical epileptology to offer to readers a hugely didactic, built-in, transparent and essentially helpful wisdom base and study instructions.

Additional resources for Membrane Morphology of the Vertebrate Nervous System: A Study with Freeze-etch Technique

Example text

The addition of a surface layer of metal tends to enlarge particles and fill in depressions. , 1963). (ii) Contamination. A layer of adsorbed water or hydrocarbon material from the pump system could resemble and add to the artifact resulting from shadowing. Dirt, crystals, residual tissue, etc. may adhere to the finished replica (Figs. 4b, 6a-c) and impair the preparation. (iii) Heating. During the shadowing process sufficient heat may be transferred to the frozen surface to melt the edges of the holes.

Triangles = tissue displaced by uneven cutting. 23 24 Fig. 5. Efsects of heavy etching and slow freezing a: Example of heavy etching. The E face (EF) of the plasma membrane of a perivascular cell has collapsed upon the collagen fibers (Col) and their outlines appear as ridges (arrows) on the left. On the right the E face was swept away in the fracture revealing collagen fibers with the typical periodic cross-banding. b: Pigeon optic tectum. Slow freezing of unfixed tissue soaked in 25% glycerol.

10). This is due to the fact that the two layers and the lucent interspace, each 2-3 nm in thickness, lie close to the limits of resolution imposed by the thickness of the platinum coating on the fractured and etched tissue surface. In addition, any contamination will tend to selectively fill the depression between the lamellae. In favorable preparations, the electron-dense margins of the membrane (which represent the hydrophilic ends of the lipid molecules, Branton, 1969) are represented by two small ridges with a depression between, corresponding to the electron-lucent central region.

Download PDF sample

Membrane Morphology of the Vertebrate Nervous System: A Study with Freeze-etch Technique by C. Sandri


by William
4.5

Rated 4.85 of 5 – based on 39 votes