News tagged with electron microscopy
Endothelium, heal thyself: A fresh look at this resilient, adaptable tissue
(Medical Xpress)—The endothelium, the cellular layer lining the body's blood vessels, is extremely resilient. Measuring just a few hundred nanometers in thickness, this super-tenuous structure routinely ...
Medical research
May 16, 2013 |
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Scientists map elusive 3-D structure of telomerase enzyme, key actor in cancer, aging
(Medical Xpress)—Like finally seeing all the gears of a watch and how they work together, researchers from UCLA and UC Berkeley have, for the first time ever, solved the puzzle of how the various components ...
Medical research
Apr 12, 2013 |
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Excess protein linked to development of Parkinson's disease
Researchers at the University of California, San Diego School of Medicine say overexpression of a protein called alpha-synuclein appears to disrupt vital recycling processes in neurons, starting with the ...
Parkinson's & Movement disorders
Feb 07, 2013 |
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Neuroscientists propose revolutionary DNA-based approach to map wiring of whole brain
A team of neuroscientists has proposed a new and potentially revolutionary way of obtaining a neuronal connectivity map (the "connectome") of the whole brain of the mouse. The details are set forth in an essay published October ...
Neuroscience
Oct 23, 2012 |
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Findings suggest how cancer cells can become resistant to DNA damage-inducing treatments
An international team of scientists led by UC Davis researchers has discovered that DNA repair in cancer cells is not a one-way street as previously believed. Their findings show instead that recombination, an important DNA ...
Cancer
Oct 23, 2011 |
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Target for obesity drugs comes into focus
(Medical Xpress)—Researchers at the University of Michigan have determined how the hormone leptin, an important regulator of metabolism and body weight, interacts with a key receptor in the brain.
Medical research
Oct 11, 2012 |
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Scientists aim to analyse a whole mouse brain under the electron microscope
What happens in the brain when we see, hear, think and remember? To be able to answer questions like this, neuroscientists need information about how the millions of neurons in the brain are connected to ...
Neuroscience
Oct 23, 2012 |
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International team discover clue to Friedreich's ataxia, devastating nervous system disease
(Medical Xpress)—A new form of iron may hold the clue that leads to treatment for a fatal inherited nervous system disease that can cause gait disturbance, speech problems, heart disease, diabetes and other ...
Medical research
Nov 23, 2012 |
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Study identifies 'chink in the armor' of Schmallenberg virus
A key building block in the Schmallenberg virus could be targeted by anti-viral drugs, according to a new study led from the University of Leeds.
Medical research
Apr 17, 2013 |
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Discovery points to new approach to fight dengue virus
Researchers have discovered that rising temperature induces key changes in the dengue virus when it enters its human host, and the findings represent a new approach for designing vaccines against the aggressive ...
Diseases, Conditions, Syndromes
Apr 11, 2013 |
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Research on vitamins could lead to the design of novel drugs to combat malaria
New research by scientists at the University of Southampton could lead to the design of more effective drugs to combat malaria.
Medical research
Jan 27, 2012 |
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Cocoa may enhance skeletal muscle function
A small clinical trial led by researchers at UC San Diego School of Medicine and VA San Diego Healthcare System (VASDHS) found that patients with advanced heart failure and type 2 diabetes showed improved mitochondrial structure ...
Health
Mar 02, 2012 |
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New scientific method unmasks chronic infections
Chronic infections are a large and growing problem throughout the developed world, and intensive research is being conducted in ways to combat the recalcitrant bacteria. When bacteria aggregate into so-called biofilm, they ...
Medical research
Aug 08, 2012 |
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How chemotherapy becomes more effective
Researchers from the University of Zurich have found a cellular brake that protects cancer cells from chemotherapy -- and they demonstrate which medication can be used to render it inoperative. Their study published in the ...
Cancer
Mar 05, 2012 |
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Failing metal hip implants could be releasing genotoxic material
(Medical Xpress) -- Scientists have discovered that the inflammation in the surrounding tissue of patients with failing chromium-cobalt metal-on-metal (MOM) implants is caused by the release of The Cobalt ...
Medical research
Jul 04, 2012 |
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Electron microscope
An electron microscope is a type of microscope that uses a particle beam of electrons to illuminate a specimen and create a highly-magnified image. Electron microscopes have much greater resolving power than light microscopes that use electromagnetic radiation and can obtain much higher magnifications of up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by the wavelength of the radiation they use. The greater resolution and magnification of the electron microscope is because the wavelength of an electron; its de Broglie wavelength is much smaller than that of a photon of visible light.
The electron microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane relative to the specimen. This manner is similar to how a light microscope uses glass lenses to focus light on or through a specimen to form an image.
For more information about Electron microscope, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
