Tag: "precise" at biology news

UB conference to gather leaders in 'computational anatomy'

...eds to be communicated to computers, then formally precise theories of the underlying spatial relations are required," he points out. "The workshop at UB is designed to contribute to the development of such theories, from the side of both bio- and spatial informatics." Attending the workshop will be some...

Of mice and men's (and women's) contraceptives

...entiation. As cells become mature sperm, there's a precise order of synthesis of many essential proteins needed to create functional gametes. We think the absence of the MSY2 protein causes problems in the timing of sperm or egg development. We're working hard on understanding this mechanism." A similar huma...

Penn researchers determine structure of binding site of colon-cancer drug and its protein target

...ennsylvania School of Medicine have determined the precise molecular details of how Erbitux, a recently approved colorectal cancer drug, binds to its target on cancer cells. Knowing this chemical configuration will lead to better drug design for this family of cancer medications. Colorectal cancer is one of ...

Neural activity reveals continuity between infant and adult sleep

... moodiness, and myriad health problems. Still, its precise function remains unclear. An intriguing role for REM sleep - the stage most closely associated with dreaming - was suggested almost 40 years ago when sleep researchers Howard Roffwarg and William Dement discovered that babies spend far more time in R...

Method shows how precisely gene expression signals are copied in DNA replication

... any inference, we know we're not going to get the precise rates," she said. "To get an exact answer, we'd have to look at all the cells in an individual. Our method provides a way to get useful approximations from a small DNA sample."...

Nuclear imaging of iodine uptake in mouse tissues

... of energy, but it's easy to track with these very precise detectors that have been designed and built by the Jefferson Lab Detector Group." The thyroid needs iodine to regulate metabolism and is unable to distinguish between regular dietary iodine and ingested radioactive iodine. So the researchers weren't...

JLab, College of W&M researchers study radiation blockers

... of energy, but it's easy to track with these very precise detectors that have been designed and built by the Jefferson Lab Detector Group." The thyroid needs iodine to regulate metabolism and is unable to distinguish between regular dietary iodine and ingested radioactive iodine. So the researchers weren't...

Researchers make gains in understanding antibiotic resistance

...Steitz. "It is becoming critical to understand the precise structural basis of resistance and even more important to do something about it." Steitz cited, for example, recent statistics published in the journal Nature, stating that hospitals in the United States see some two million cases of antibiotic-res...

Neural tube defects decrease with folic acid fortification

...lations in Canada and the U.S. and state that more precise estimates will be provided by ECLAMC during the next few years....

ESA at the European Geosciences Union General Assembly

...ve monitoring of climate change effects, measuring precise shifts in land cover, ice field extent, sea surface height and even the composition of the atmosphere. In the shorter-term, satellites yielded rapid mapping of the December 2004 Sumatran tsunami, swiftly bringing home the full scope of the disaster....

CyberWalk - unconstrained walking in virtual worlds

... required. Human perception and cognition are very precise operations, responding, for instance, very sensitively if together with a rotation of the body the environmental image does not "move" at the same angular velocity. If the coordination of the two is less than perfect, the behavior of the person in th...

UCLA scientists pinpoint region of autism gene on chromosome 17

...team is now conducting DNA testing to identify the precise site on the chromosome, which will bring them closer to finding the gene mutation. This is the first step to providing better screening and potential treatments for autism. AUTHORS Dr. Dan Geschwind, associate professor of neurology; Rita Cantor, ...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...the tumor grow." Luo points out that MADM is more precise than the widely used "knockout mouse" technique, in which a gene of interest is removed ("knocked out") of every cell in the animal's body. The knockout method can have unwanted, deleterious consequences for the mouse and the experiment, Luo adds, wh...

How exactly does the brain control breathing?

...sue highly debated by Guyenet and Richerson is the precise location and cell types involved. Guyenet proposes that these nerve cells are located in a ventral area of the brainstem (the retrofacial region) and loaded with a transmitter substance called glutamate. Their close proximity to the ventral surface o...

PNAS highlights for the week of May 16 - 20

...it between the veins. The researchers suggest this precise spatial control of amino acids on inorganic surfaces could have many technological applications. Tracing the Rise of Ants In a perspective article, Edward O. Wilson and Bert Hlldobler explore the evolutionary history of ants, tracing their waves of...

Columbia University researchers create mouse model that develops a human-like lymphoma

... has slowed understanding of the BCL6 gene and its precise role in tumor development. Published in the May 2005 issue of Cancer Cell, the study was led by Riccardo Dalla-Favera, M.D., one of the world's leading cancer geneticists and lymphoma researchers. Dr. Dalla-Favera is director of the Herbert Irving C...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

... as skin and the linings of the lung. While their precise role remains poorly understood, they perform vital...sponses and halting unwanted ones. "Although their precise function is still unclear, delta-gamma T cells seem to form the first line of response against exter...

Same fold in viral shells point to common ancestry

...in the T4 virus. X-ray crystallography yields more precise results because it is capable of higher resolution than cryoelectron microscopy. The researchers used X-ray crystallography to view the gp24 protein at a resolution of 2.9 angstroms. The X-ray crystallography data confirmed that gp24 has a fold simil...

New kidney test better elder mortality predictor

...function," says Shlipak. The result is a much more precise measure of kidney dysfunction -- which, as the study points out, is associated in elderly persons with an increased risk of death. The researchers found that, measured by cystatin levels, participants fell into three broad groups. Twenty percent were...

Gene keeps neural cells on correct developmental path

...in differentiating neurons probably orchestrates a precise sequence of genes sensitive to different levels of REST, Mandel speculates. REST has been a difficult gene to study. Using knockout technology -- a popular technique for determining gene function -- does not work for REST because mice lacking the gen...

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(Date:5/23/2013)... Wis. In an age when microbial pathogens are ... tamp down infection, a team of Wisconsin scientists has ... curbing the bacteria that cause staph infections. , Writing ... Society , a group led by University of Wisconsin-Madison ... with the "quorum sensing" behavior of Staphylococcus aureus ...
(Date:5/22/2013)... have developed a novel technique that can detect molecular ... that is one of the most important, though time-consuming, ... a paper in Nature , post-doctoral researcher David ... Schnell of the Center for Free-Electron Laser Science (CFEL) ... finely-tuned microwave fields to identify molecular variants apart, and ...
(Date:5/22/2013)... environmental and human health effects from disposal of ... led scientists to recommend stronger government policies to ... battery materials. That,s the conclusion of a new ... & Technology . , Oladele A. Ogunseitan and ... mainstays for powering everything from smart phones to ...
Breaking Biology News(10 mins):University of Wisconsin chemists find new compounds to curb staph infection 2Detecting mirror molecules 2Detecting mirror molecules 3
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