Bursts of waves drive immune system 'soldiers' toward invaders
Scientists have discovered that torrents of microscopic waves propel white blood cells toward invading microbes. The discovery - recorded on videotape -- holds the potential for better understanding and treatment of cancer and heart disease. Visible only under a very high-resolution light microscope, th......omparing computer models of damaged human DNA with microscopic images of human cells that reveal focal sites of r...ate about 25 to 30 DSBs per gray of gamma rays. In microscopic images of real cells, however, the visible sites that might be assumed to correspond to double-stran...Aggressive therapy best for certain AML patients
...h normal-looking chromosomes. These cells lack the microscopic chromosome damage that guide therapy. In 1994, however, a team of researchers that included Bloomfield discovered the MLL-PTD mutation in these patients. It was the first clinically useful marker to be identified in cases of AML with normal-lookin...Gold nanoparticles may pan out as tool for cancer diagnosis
...rkers, if present. Next, the cells are placed on a microscopic slide for imaging. After the rods absorb and re-emit radiation, a special camera records the scattered light, which a computer helps to analyze. Finally, based upon the data, a diagnosis is made. ......me of the most reclusive members of this and other microscopic communities much more accessible for laboratory study. The vast majority of microbes are notoriously resistant to growing in laboratory cultures because they are so intricately linked to their own unique ecosystems. Microbiologists have coaxed les...Microscopic jets, diamonds unlikely on Uranus, and amazing mosquito legs
...catalysis may prove a useful method for propelling microscopic objects in liquids. - KM Diamonds unlikely in gas giants like Uranus L. M. Ghiringhelli, C. Valeriani, E. J. Meijer and D. Frenkel Physical Review Letters (forthcoming, preprint available) A new study finds that diamonds probably don't crystall...Has science unearthed the Holy Grail of pain relief?
...hers at The University of Manchester have examined microscopic amoeboid organisms commonly called slime moulds in a bid to gain greater insight into these pain molecules, known as P2X receptors. In humans, P2X receptors look identical to one another and so scientists have had difficulty understanding how they ...A first-principles model of early evolution
...h translates the survival of entire organisms into microscopic selection for particular advantageous genes, or pr...c properties of organisms their genome sizes and microscopic properties stabilities of their proteins. The results of the study suggest a plausible comprehen...'Virtual' mouse brains now available online
... Duke University has created startlingly crisp 3-D microscopic views of tiny mouse brains -- unveiled layer by layer -- by extending the capabilities of conventional magnetic resonance imaging. "These images can be more than 100,000 times higher resolution than a clinical MRI scan," said G. Allan Johnson, Duke...Tiny tweezers and yeast help St. Jude show how cancer drug works
...this first-of-its-kind study, researchers used the microscopic magnetic tweezers to monitor changes in the length of an individual DNA molecule caused by the action of a single topoisomerase I enzyme; and to study how the binding of a single topotecan molecule to this enzyme-DNA complex alters DNA uncoiling. Bas...Soil particles found to boost prion's capacity to infect
...m to have a special affinity for latching onto the microscopic particles. "We expected the binding of the montmorillonite to be the highest among the minerals we examined. However, we were surprised by the strength of the binding," notes Joel Pedersen, a UW-Madison professor of soil science who helped direct t...Waging war on the deadliest superbug
It infiltrates hospitals as microscopic spores. Its defences are so strong it can resist most antibiotics. And it kills three times as many people every year as MRSA. But scientists at The University of Nottingham are amassing an arsenal of weapons in preparation for counter offensive agai...World Wildlife Fund warns against iron dumping experiment near the Galapagos Islands
... induce phytoplankton blooms in the hopes that the microscopic marine plants will absorb carbon dioxide. The company is speculating on lucrative ways to combat climate change. There are much safer and proven ways of preventing or lowering carbon dioxide levels than dumping iron into the ocean, said Dr. Lara Ha...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 that...Study could impact noninvasive treatment of cancer tumors
...tigate the effects of gold-based nanoparticles, or microscopic particles equal to one-thousandth the thickness of a single strand of human hair, on cell transport and the response of those cells after being frozen. Their hypothesis: nanoparticles would alleviate the damaging effects generally caused by the free...Muscle weakness: New mutation identified
..., i.e., muscle weakness in the absence of macro or microscopic signs of muscle wasting. The results from single fibre contractile measurements and in vitro motility analyses demonstrated a mechanism where tropomyosin modulates myosin-actin kinetics. A slower motor protein myosin attachment rate to and a faster...High cholesterol diets modify gene expression in atherosclerosis
...us plaques are not still visible using an electron microscopic aortic SMCs are extracted and in-vitro cultured. Experts cultured SMC-Cs (obtained from animals without a cholesterol dietary supplement) and SMC-Chs (extracted from animals with cholesterol dietary supplement) under the same conditions. After genet...UCR biologist receives $1.75 million grant to study plant-threatening bacteria
...f an inch long and bearing a lethal weapon that is microscopic in size. Nunneys team will study Xylella , a pathogen that has potential, along with its vector, the glassy-winged sharpshooter, to wipe out Californias grape, peach and almond industry, as well as much of the states ornamental bushes and trees. ...A first -- Hebrew University scientist observes brain cell development in 'real time'
...ne 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...