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Tag: "microscopic" at biology news

Brightening prospects of using fluorescent nanotubes in medical applications

... Nanotubes should work as well as gold clusters as microscopic blow torches while their fluorescence should make them easy to locate. At least that is the hypothesis the researchers hope to test....

Surprising origin of cell's internal highways

...s have long thought that microtubules, part of the microscopic scaffolding that the cell uses to move things arou...s -- is the source of a particular subset of these microscopic fibers. The findings point to a novel cellular mechanism that may guide cell movement and possibly c...

AAAS decries latest stem cell veto

... cells, which proponents say would be derived from microscopic embryos left over and due to be discarded after in vitro fertility treatments. Current U.S. policy limits such funding to fewer than 20 stem cell lines that had been created when the president first announced U.S. policy in 2001. "Our concern is t...

A first -- Hebrew University scientist observes brain cell development in 'real time'

...e edition of Nature Neuroscience. Using special microscopic imaging techniques, combined with virus gene technology, Dr. Mizrahi was able to develop an experimental model to study development of neural dendrites in vivo. The dendrites are the string-like extensions of the neuron that spread out to reach other...

Brain's white matter -- More 'talkative' than once thought

...d causes electrical signals in the OPCs. A further microscopic hunt revealed that pools of glutamate were present in the nerve fibers wherever they touched OPCs. All of the nerve cells in the white matter that released glutamate within reach of OPCs, moreover, had something in common: no myelin insulation. N...

Latent memory of cells comes to life

...ematical model based on positive feedback from the microscopic state of the nucleosomes, the research group could simulate the experimental results and in this way gained insight into the mechanisms by which living cells with identical DNA can achieve extreme differentiation. The research at the ‘Models of Li...

Switching genes to overdrive improves muscular dystrophy symptoms in mice

...d MDX mice on both runs. The exercise tests and microscopic and chemical examinations of the muscles showed that boosting PGC-1alpha caused “a clear and substantial improvement in the structure and function of skeletal muscle in this disease model,?the scientists wrote....

MIT's ocean model captures diversity of underwater forests

...l so realistic that the virtual forests of diverse microscopic plants they "sowed" have grown in population patterns that precisely mimic their real-world counterparts. This model of the ocean is the first to reflect the vast diversity of the invisible forests living in our oceans-tiny, single-celled green plan...

Nanotechnology meets biology and DNA finds its groove

...d DNA. The new technique is akin to threading a microscopic needle with a thread of DNA, explains Juan de Pablo, a UW-Madison professor of biomedical engineering and a co-author of the study. The team has a way, he says, of "positioning the DNA molecule right where we want it to be. It is important that we ca...

New recommendations against a major opportunistic infection -- cryptococcosis

...iduals suffering from cryptococcosis. Caused by a microscopic fungus, Cryptococcus neoformans, cryptococcosis affects immunosuppressed individuals, most of whom are infected by HIV, but who also suffer from other immunological disorders or who are receiving immunosuppressive treatments. Most often, the fungus c...

Molecular differences between early and advanced melanomas could provide new drug targets

...owerful stimulator of angiogenesis Ð the growth of microscopic blood vessels that nourish cancerous tumors and lead to unregulated cell growth. When melanoma cells overexpressing Akt were introduced into immunocompromised (nude) mice, the mice developed aggressive tumors that expressed high levels of VEGF, wher...

Scientists discover new life forms in the Arctic Ocean

...e. The researchers have discovered a new group of microscopic organisms, which they have baptized "picobiliphytes": pico because of their extremely small size, measured in millionths of a meter, bili because they contain biliproteins, highly fluorescent substances that transform light into biomass, and phyte me...

Researchers find 6,000-year-old fossil evidence

...'s why we used a technique that involved analyzing microscopic starch grains on cooking and grinding tools to find this new evidence." Pearsall, who studied tools from sites in Ecuador and the Bahamas, teamed with a group of scientists doing research in various locations in Central and South America; the proj...

Einstein's tea leaves inspire new blood separation technique

...dly and efficiently separating blood plasma at the microscopic level without any moving parts, potentially allowi...od plasma from red blood cells, proteins and other microscopic particles is an essential step in many common medical tests, including those for cholesterol levels,...

No sex for 40 million years? No problem

...iology, focuses on the study of bdelloid rotifers, microscopic aquatic animals that live in watery or occasionally wet habitats including ponds, rivers, soils, and on mosses and lichens. These tiny asexual creatures multiply by producing eggs that are genetic clones of the mother ?there are no males. Fossil reco...

Tears reveal some of their deepest secrets to researchers

...all tear film, which is made up of three distinct, microscopic layers. The middle, watery layer ?what we normally... a collection of irritating symptoms that includes microscopic damage to the front of the eye. The eyes may ache, burn, feel extremely dry or excessively tear. ...

Microfluidic chip helps solve cellular mating puzzle

...iversity of California, San Diego. In place of the microscopic electrical circuitry of a computer chip, their dev...n the chip, computer-controlled fluid pressure and microscopic valves allow the researchers to isolate and conduct experiments on extremely small clusters of cells...

In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air

...gives them a lemon fragrance ?to create additional microscopic particles, scientists found. Certain ionic purifiers emit ozone as a byproduct of ionization used for charging airborne particles and electrostatically attracting them to metal electrodes. Ozonolysis purifiers emit ozone at higher levels on purpose w...

Manual dishwashing study digs up dirt on dish cleanliness

...l a few scrubs per side and measured the amount of microscopic organisms still clinging to the dishes. Lee and Pascall discovered that washing dishes in hot dish water, followed by soaking in extra sanitizers, eliminated almost all of the bacteria on them, even when coated with dried-on cheese. But dishes was...

Coated nanoparticles solve sticky drug-delivery problem

...esearch. "But if you want to deliver medicine in a microscopic particle, they can also keep the drugs from gettin...hen conducted further tests to see how large their microscopic drug carriers could be before they got trapped in the mesh. Larger nanoparticles are more desirable ...

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