Laboratory test of evolutionary theory confirms importance of links between populations
...ve that fragmentation of the natural landscape, by separating communities of organisms that had been connected, has the potential to alter the evolutionary processes that enable organisms to adapt to changing local conditions. This study provides hard evidence to support that view. The study, published in the O...New tool highlights activity of key cellular signal
.... Once activated by cyclic AMP, PKA breaks in two, separating its two fluorescent "caps." The first all-protein fluorescent version of PKA was developed a few years later. But the PKA-based probes, which Zhang used as a postdoctoral fellow at the University of California San Diego, were difficult to use b...ESA's Huygens begins its final journey into the unknown
... and 8 minutes to cross the 1.2 billion kilometres separating the Cassini spacecraft and Earth. "Today's release is another successful milestone in the Cassini/Huygens odyssey", said Dr David Southwood, ESA's Director of Science Programmes. "This was an amicable separation after seven years of living togeth...Cleft palate research receives 200,000 award
...es that fuse together to form a complete structure separating the oral and nasal cavities," explained Dr Dixon, who has worked in craniofacial research for the last 14 years. "The underlying developmental mechanisms are poorly understood but recent genetic studies have provided important insights into this comp...Scientists find missing link between whale and its closest relative, the hippo
...es and most of the large land animals. Rather than separating whales from the rest of the mammals, the new study supports a 1997 proposal to place the legless whales and dolphins together with the cloven-hoofed mammals in a group named Cetartiodactyla. "Our study shows that these groups are not as unrelated as ...National survey shows Americans are in the dark regarding genetically modified foods
...ion to genetically modified foods, have difficulty separating fact from fiction when it comes to the science behind them and are willing to believe unsubstantiated rumors about them. According to a national study of 1,200 Americans commissioned by the Food Policy Institute (FPI) at RutgersCook College, while m...Scientists document complex genomic events leading to the birth of new genes
...hromosomes and is the only cytogenetic distinction separating humans from apes. At the molecular level, however, the differences among the species are much more complex. Bork's team systematically searched the complete genomic sequences from a broad range of taxa (mouse, rat, roundworm, fruit fly, mosquito, an......avian IQ index. His intelligence index is not only separating the featherweights from the big bird brains, it's also providing clues about why some birds make great immigrants, as well as insight into the parallel evolution of primate and bird brains. The smarts pecking order is based not on a single bird-in-ca...Chemical engineer Kao explores antibiotic synthesis with DNA chips
... produce more antibiotics. Imagine mixing and then separating ten decks that all have two jokers each. Do it with enough replications and you'll get a deck with 20 jokers--or a bacterium with 20 beneficial mutations. "In one year we should be able to generate a high producer that's equivalent to 20 years of wor...New insight into brain and speech promises help for learning disabilities
... sound wave looks like compared to the brain wave, separating the filter and source response. With funding from the National Institutes of Health, Kraus pays her young subjects five dollars an hour -- ample compensation for the 8- to 12-year-old youngsters -- for participating in achievement assessment, listeni...Protein tags regulate key ion channel
...embrane barriers that hold in the cell's contents, separating the cell from the outside world. Ion channels allow ions such as potassium, sodium and calcium to flow in and out and so are key regulators of many fundamental processes in biology. "Ions are the currency of the cellular world," explained Goldstein.......ons hold their meetings jointly with a short break separating the Virology division meeting. This year's meeting, for only the second time since 1966, will feature three concurrent congresses with bridging plenary sessions on topics common to all three congresses. The opening session on the evening of Saturd...'Punctuated' evolution in the human genome
...mes, and it is the primary cytogenetic distinction separating humans and their evolutionary progenitors. Within this 700 Kb region of human chromosome 2, the researchers identified segments of DNA that originated from 14 ancestral loci. These DNA segments, or "duplicons," ranged from 4-77 Kb in length and exhi...Tiny zebrafish teaches researchers how to fight off a deadly cancer
...olutionary distance of more than 300 million years separating zebrafish from humans, the zebrafish embryo might contain cues that could influence the behavior of human metastatic melanoma cells. As in Hendrix's previous studies using other laboratory models, the current study showed that within the zebrafish e...Scripps scientists identify target of an immune suppression molecule called CD22itself
...ly, to the protein to which it was bound. Then, by separating out the components of the cell, they would be able to tell what that molecule was. What they found was unexpected. CD22 seems to target itself. Neighboring molecules of CD22 target neighboring molecules of CD22, and when they do, they form homo-mult...New partnership to clear landmines for African elephants
...use of the landmines that create a manmade barrier separating the Chobe region from the upper Cuando and Zambezi Rivers. The ranging area of these elephants within the proposed multi-country Kavango Zambezi Transfrontier Conservation Area (Kaza TFCA) is reduced to a fraction by the buried ordnance. To restore n...New discovery blurs distinction between human cells and those of bacteria
...rticular amino acids and atoms." A key distinction separating the cells of primitive organisms like bacteria, known as prokaryotes, from the cells of complex organisms like humans is that complex cells -- eukaryotic cells -- have a much higher level of subcellular organization; eukaryotic cells contain membrane...Researchers discover new tumor defense system
...ytes to recognize the tumor and a physical barrier separating the lymphocytes and the tumor. Now, Dr. Alan M. Kleinfeld and Clifford Okada of the Torrey Pines Institute for Molecular Studies in San Diego, CA, have added another reason to this list. They discovered that tumors secrete fatty acids which inhibit t...Wanted: Companies to license life-saving breath test developed at NJIT
...ompounds in the breath onto activated carbon, then separating them with a gas chromatograph and identifying them with a mass spectrometer. The test detects around 200 different volatile organic compounds in a single sample of breath, in distinctive patterns that can determine health or illness, Phillips said. ...Key process in gene regulation occurs in blood platelets, Univeristy of Utah researchers find
...latelets. Platelets bud off from these extensions, separating from the cell body and nucleus, and mature platelets then enter the bloodstream. Andrew S. Weyrich, Ph.D., research associate professor of internal medicine and the study's corresponding author, devised a way to induce stem cells to turn into megakar...