Tag: "location" at biology news

Research details how a virus hijacks cell signals to cause infection

...e of epithelial cells, in a seemingly inaccessible location called the tight junction. In the new study, Drs. Bergelson and Coyne found that CVBs have evolved an indirect route of attack. The virus first attaches itself to more accessible cell receptors called DAF receptors that lie exposed on the upper surf...

Movement of chromosome in nucleus visualized

...ent inside the nucleus or to determine whether the location of the chromosomes was the result of random diffusion or if they are moved around by molecular motors. In a study published in the April 17 issue of Current Biology, UIC and UIUC researchers show that chromosomes in the cell nucleus are capable of ...

Forsyth scientists gain greater understanding of how embryos differentiate left from right

...sing it on both sides equally, both randomized the location of the viscera without causing any other defects. To understand the mechanism of action of H+-V-ATPase, researchers isolated its two physiological functions, cytoplasmic pH and membrane voltage gradient (Vmem) regulation. Varying either pH or Vmem, i...

Study in Science holds promise for a new approach to drug therapy

...l types. Early tests revealed the existence of one location on the beta-gamma subunit in particular, a flexible "hotspot" where the majority of the subunit's interactions with enzymes take place. Past studies have mapped the surface of the G protein, but medical center researchers were the first to conceive t...

Stanford study of owls finds link in brain between sight and sound

...ectively to sounds that came from the same spatial location as that encoded by the stimulated site. The same stimulation suppressed the auditory system's response to sounds coming from other locations. Selecting certain kinds of information to be processed, while ignoring others, is the root of attention. Wh...

First wolverine radio-collared in Pacific Northwest

...ildlife (WDFW), traveled by snowmobile to a remote location south of the Pasayten Wilderness in Okanogan County. After immobilizing the wolverine with a sedative, Aubry and his team quickly went to work to evaluate the health of the animal, take measurements and tissue samples for genetic analyses, and insta...

Tiny polyps gorge themselves to survive coral bleaching

...act temperatures vary with individual species from location to location throughout the tropics, they all must live within that tight range. When the temperature climbs ab...

Powerful new tool for studying brain development

...nformation on those genes, such as their function, location on chromosomes and exact DNA sequence. The BGEM gathers this information through direct links to the scientific databases PubMed, LocusLink, Unigene and the Gene Ontology Consortium, which is housed at the National Center for Biotechnology Informatio...

Patterns in genome organization may partially explain how microbial cells work

The location of a piece of real estate may be its most importan... the University of Virginia have reported that the location of genes and other features distributed along the chromosomes of bacteria and simpler organisms also...

Carnegie Mellon develops non-invasive technique to detect transplant rejection at cellular level

...esearch because biopsy samples are very limited in location and size." The reported findings also have broader implications for biology and medicine, according to Ho. "We now have the ability to visualize non-invasively and with sensitivity individual cells and their movement to targeted sites. Our new appr...

Tracking the memory trace

...e brain, and it's there and recalled from the same location at any time after learning," said Davis. "We now think that different areas of the brain have dominion over small intervals of time after training. One area might have dominion and then another." Others who participated in the research include Drs. ...

Scientists crack code for motor neuron wiring

...eurons, Dasen and colleagues mapped the timing and location of each of the Hox proteins expressed by motor neurons that project to the wing in chick embryos. "It became clear that these proteins weren't randomly expressed, but were expressed in highly precise patterns that corresponded to anatomically-defined...

Brainstem blocks pain to protect key behaviors

...of what their natural role might be." Their prime location -- in the brain stem, the "Gold Coast of neuroanatomical property" -- suggests that they "must do something crucial." This study indicates that they "protect against distraction. They give precedence to essential behaviors." Defects in this system ...

Novel enzyme offers new look at gene regulation

... effects on nearby genes. Depending on the precise location and how many methyl groups are added, their presence can either switch affected genes on or off. The first enzyme to remove methyl groups from histones, or histone demethylase, was identified last year. This was a breakthrough in the study of histon...

Virtual microscopy project wins educational technology award

...wed by students on an ordinary PC screen, from any location with a broad band internet connection. The method allows free navigation in a specimen with stepless zooming, and educational annotations as well as overlay graphics to easily be added to the virtual slides. According to the researchers, all steps f...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

... delivery of aid has varied significantly from one location to another across the tsunami-affected region, infrastructure replacement is relatively easy to achieve compared with reformulating fisheries policy and modifying long-standing practices of communities to ensure sustainable livelihoods. "The reconst...

Katrina floodwaters not as toxic to humans as previously thought, study says

...ealth. If the floodwaters had occurred in another location near more industrial sites in the city and if the wind damage or water surge had been more severe, then the resultant floodwaters could have been a more serious toxic threat, Pardue says. "Instead, the city filled slowly, like a bathtub, and the wate...

Science's Breakthrough of the Year: Watching evolution in action

...eath. ITER Lands in France: The struggle over the location of the world's first fusion reactor has ended -- the International Thermonuclear Experimental Reactor (ITER) will be built at Cadarache in southern France and not in Rokkasho, Japan. One aim of ITER is to generate fusion-powered electricity by recrea...

Deep treasure to be found in Oculina Bank

...d scamp grouper as well as rock shrimp. The reefs' location directly under the Gulf Stream makes them a potentially important source of fish larvae for the entire southeast U.S. continental shelf. Harbor Branch Oceanographic Institution scientists first discovered the deepwater Oculina reefs with the Johnso...

Magnetic probe successfully tracks implanted cells in cancer patients

... iron oxide particles was able to track the cells' location much more accurately than the radioactive tracking method and provided anatomic detail simultaneously -- structural detail not possible by tracking radioactivity. "On the MR images, we can see the lymph nodes, and we can see the magnetically labele...

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