New genetic data overturn long-held theory of limb development
...according to the scientists, and that this toolkit exists in some primitive form in a living primitive bony fish, the paddlefish. "We found that the genetic capability seen in tetrapods to build limbs is present in even more primitive fish," said lead author Marcus Davis, PhD, a postdoctoral fellow in Neil ...DNA repair proteins monitored at double-strand break
...ries of signals linked to DNA repair. Inactive ATM exists as a pair of these molecules linked together. Kastan previously reported in the journal Nature how the inactive ATM molecules separate from each other in response to a double-strand break ( http://www.stjude.org/media/0,2561,453_5484_3126,00.html ). ......st and most comprehensive catalog of proteins that exists to date, according to Yingchun Wang, a post-graduate researcher in the Klemke lab....The Institute of Ecosystem Studies to host an international conference on ecology and urban design
Millbrook, NY --- Ecology exists within cities. The air we breathe and the water we drink is shaped by the built landscape surrounding us. As the human population expands, and cities become larger and more concentrated, urban design will play a critical role in creating urban center...Data presented at ISHLT meeting confirm RNA analysis can identify rejection in lung transplant recip
...this year's ISHLT meeting shows the potential that exists to develop a non-invasive test that could alleviate the need for tens of thousands of biopsies." Currently, uncomfortable and invasive biopsies are the standard for monitoring lung transplant recipients for acute cellular rejection. Biopsies are pe...Cancer scientists create 'human' leukemia process to map how disease begins, progresses
...ed mainly on human cells where the disease already exists or by studying leukemia created in mouse cells. This study flipped it around to focus on asking which are the normal cells within which the disease arises and then how it evolves and progresses, all within the context of human cells. "So what we ...ACS News Service Weekly PressPac -- April 11, 2007
... of microbes in a sample. No direct test currently exists for low-levels of proteins, the report adds. The study describes use of the biosensor to detect E. coli in ground beef and other materials at some of the lowest concentrations ever reported. At the heart of the new biosensor is a vibrating cantil...New study sheds light on long-term effects of logging after wildfire
...operation affects fuels differently, and variation exists within any forest stand. It is also important to consider the whole fuel bed when thinking about fire hazard in the future." Model projections indicated that large fuels will increase over time in the unlogged forests as dead trees fall over, with...Scripps research study shows humans and plants share common regulatory pathway
... said, will focus on the extensive literature that exists describing the R protein dependent immunity in plants to better understand human NLR pathways, especially those dependent on Nod1.......d Central Africa, An almost perfect juxtaposition exists in many areas between the distribution of elephants and of people, and in many areas elephants are lost as encroachment into the forest increases. The surveys were conducted under the auspices of MIKE (Monitoring of the Illegal Killing of Elephants)...Flowers shape themselves to guide their pollinators to the pollen
... master of none), yet surprisingly little evidence exists in support of this idea. Nathan Muchhala from the University of Miami explored pollinator specialization through experiments with bats, hummingbirds, and artificial flowers in cloudforests of Ecuador. In a study published in the April issue of the Am...Engineering the heart piece by piece
...were presenting the current state of the art as it exists in our lab and others, and pointing out both potential applications and hurdles that remain. The paper presents a model for collaborative research between engineers, clinicians and biologists for successful cardiovascular tissue engineering resea...Bacteria from patient's dental plaque causes ventilator-associated pneumonia
...nia. "Our study shows that a strong relationship exists between oral and respiratory pathogens in patients with ventilator-associated pneumonia," said Paul Heo, D.D.S., a doctoral student in the UB dental schools Department of Oral Biology and first author on the study. "We are saying that if the pati...Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription
... and introns. In contrast, an inverse relationship exists between mRNA levels and stability of the region near 3-end of genes. mRNA levels increase with decreasing thermodynamic stability of this region. "The observed correlations are impressive, given that several other factors like promoter effectiveness,...Physicists reveal water's secrets in journal Science
...ht positive charge, while a slight negative charge exists on the opposite side of the molecule. "For a long time, most researchers agreed that, in its liquid state, each water molecule coordinates on average with four other water molecules by forming hydrogen bonds," Szalewicz said. "However, a 2004 paper...Biology professor helps others go with the flow of dam removal
...about current dam decommissionings and why a trend exists to restore rivers to their natural flow. "Dams are coming down because they are outliving their usefulness and because people are placing a higher value on natural ecosystems," Marks said in an interview. "Many of the hydropower dams that are comin...AGU Journal highlights -- February 23, 2007
...dslide, the authors find that considerable methane exists in sediments adjacent to and unaffected by the Storegga Slide. However, methane was absent from sampled landslide debris and from sediments exposed by the slide. The authors hypothesize that either methane was lost during slope failures prior to the ...Public agrees global warming exists, but divided over seriousness of problem
...cated issue, Krosnick said, people must believe it exists and will cause severe problems if it is not addressed. But they also must be optimistic that something can be done to alleviate it. "You have to be certain of these two views," he said. "That's where the breakdown comescertainty for Americans on thes...Birth rate, competition are major players in hominid extinctions
...od and water in the late Pleistocene. No evidence exists that Neandertal could store either. Both Neandertal and modern humans suffered from the primate curses of single births widely spaced. For Neandertal, cultural adaptation was not sufficient to overcome and compete with modern humans, just as Parant...West Antarctica's subglacial plumbing system mapped from space
...t," he said. Glaciologists have known that water exists under ice streams, but the observation of a system of water storage reservoirs is unprecedented. The surprising thing about this discovery is the amount of water involved, and the pace at which it moves from one reservoir to another, according to lea...