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Tag: "microscopy" at medical news

Gold to be used for cancer detection

... researchers had used a technique called darkfield microscopy to see the cancer cells under the microscope. The researchers hope that this technology may be used to perform low cost automatic detection of cancer cells in the biopsies. The researchers also feel that their technology for scattering and absorptio...

Discovery of World’s smallest laser

...optical scanning microscope. “Near-field optical microscopy is a very powerful technique, providing a snapshot wiht high spatial resolution and th eoptical signal simultaneously,” Yang said. “It allowed us to characterise the laser and dtermine beam characteristics.” What they found is that the nanowire acts ...

Fluorescent markers to distinguish Trypanosoma brucei strains causing Sleeping Sickness

... were virtually identical to counts by traditional microscopy but were considerably faster and had a significantly lower sampling error . Co-infecting strains transfected with fluorescence genes of different colour were easily distinguished by eye and their relative and absolute densities were reliably counted ...

New Technique Could Revolutionize Melanoma Diagnosis and Treatment

...techniques in this regard are reflectance confocal microscopy and multiespectral digital dermatoscopy. The former is based on analysis of specific areas of the skin lesion (badly defined or irregular edges). The latter involves photography of the pigmented skin lesion. The images are then processed to facilitat...

Study Would Pave Way for the Development of New Drugs That Targets TB Proteasome

...y Guiqing Hu and collaborators using cryo electron microscopy in Brookhaven Lab’s Biology Department and by x-ray crystallography at the Lab’s National Synchrotron Light Source. The biochemical studies were conducted at Weill Medical College of Cornell University by Gang Lin in a group led by Carl Nathan. Other...

New Multi-functional Sensing Tool To Investigate Cystic Fibrosis

...he explained. “And though scanning electrochemical microscopy (SECM), another probing technique, provides laterally resolved electrochemical data, it has limited spatial resolution. By combining AFM and SECM functionality into a single scanning probe, our tool provides researchers with a more holistic view of a...

Three-Dimensional Image Of AIDS Virus – BY FSU Researcher

...d a state-of-the art technique called cryoelectron microscopy tomography. It generates three-dimensional images similar to those from a CAT scan, but at the level of viruses and molecules rather than tissues and organs. They imaged HIV samples as well as a mutant SIV (non-human primate) strain, genetically e...

"Anti Aging" Skin Cream Developed at Clarkson University

...been using both atomic force and immunoflouresence microscopy to compare young and old epithelial skin cells. The magazine reported that the Clarkson scientists found that cells become rigid as they age. “Elasticity of these cells is important,” remarks Sokolov. “In addition to cosmetic benefits, elastic epithe...

Study Shows Tomosyn Plays an Important Role in Learning and Memory

...with the addition of high pressure freeze electron microscopy and immuno-gold staining, which together provide a clearer picture of where neurotransmitter-containing synaptic vesicles and proteins cluster. Mutant worms lacking tomosyn were compared to normal worms to determine what effect, if any, the protein h...

Using Multiphoton Microscopy to See Chromosomes in Action

... been seen in living cells. Yao used multiphoton microscopy (MPM) to image living salivary gland tissue of Drosophila (fruit flies). Unlike other methods, which lack penetrating power and can damage the specimen, MPM delivers crisp, clear images, even in thicker tissue samples like Drosophila salivary glands....

Scientists Have Developed Faster, More Accurate TB Test

...ld Health Organization recommends the sputum-smear microscopy test, which analyses the material expelled from the lungs by a deep cough. However, the test, though fast, is not accurate in around 50 percent of cases, and it can take up to six weeks to culture the sample, confirm the results and determine wheth...

WHO calls for big investment in tests for TB

...rculosis patients have access only to conventional microscopy which requires repeated testing, may miss half the...IV co-infected patients,' he added. Sputum smear microscopy is the most commonly available test that detects only 2.2 million TB cases in a year. The rest are...

Novel methods to view how a drug attaches to a cell

...The nanoparticles can then be imaged with electron microscopy to reveal the location of the drug receptor molecules on the cell," Shelnutt says. "This type of nanotagging technique might be used in non-biological applications as well - such as finding flaws in semiconductor surfaces." Source-Eurekalert MST...

Innovative Movies Show Real-Time Immune-Cell Activity within Tumors

Using advanced new microscopy techniques in concert with sophisticated transgenic technologies, //scientists at The Wistar Institute have for the first time created three-dimensional, time-lapse movies showing immune cells targeting cancer cells in live tumor tissues. In recorded...

Protein Essential for Kidney-to-Bladder Urine Transfer

...tudent Zhen Mahoney were able to arrange for video microscopy of mouse ureters in action. These revealed that peristalsis, the normal pulse-like contraction that squeezes the ureter at one point while opening it up at the next point in the tube, had been disabled. "We saw that peristalsis had been replaced by...

Bottleneck in Blood Supply Makes Brain Vulnerable to Strokes

...n fluorescence microscopy. Two-photon fluorescence microscopy is a powerful imaging tool that uses brief (less than one-trillionth of a second) laser pulses to peer below the surface of the brain. In contrast to a previous study, in which the team showed there was very little disruption in blood flow when a ...

New Computed Imaging Technique Uses Hazy Images to Improve View

...ial to broadly impact real-time, three-dimensional microscopy and analysis in the fields of cell and tumor biolo... While other methods of three-dimensional optical microscopy require the instrument's focal plane to be scanned through the region of interest, ISAM works by uti...

A Breakthrough in the Study of Hepatitis C

...Finally, virus particles were examined by electron microscopy and shown to possess the expected size and shape of HCV virus particles. Once the system was established, the group examined whether sera from patients carrying HCV could infect the human fetal hepatocytes. When sera from patients infected with dif...

Natural Milk Protein Could Lead to Super Nutritious Foods

...ing also took part in the research, using electron microscopy to visualize the tiny micelles, which measure in at a miniscule 150 nanometers (0.00015 millimeter). Dr. Livney says that foods utilizing this technology could reach the marketplace within five years. The researchers are now studying whether, once ...

Tuberculosis, A Challenge To The Political Will Of Governments, Says Veteran Crusader

...00,000 health workers, more than 11,500 laboratory microscopy centers, covering the entire population of the country, 3,500 patients started on treatment every day, and consequently a success rate of 86 per cent in treatment, as against only 25 per cent earlier – are indeed impressive by any standards. But Dr...

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