Study: Emission of smog ingredients from trees is increasing rapidly
...erly," said Purves. "It's a big enough part of the puzzle that it really needs to go in there with the rest." The study may help explain why ozone levels have not improved in some parts of the country as much as was anticipated with the enactment of clean-air laws, Purves said. Environmental technologies su...Rice finds 'on-off switch' for buckyball toxicity
...emphasize that the study only fills in part of the puzzle regarding fullerene toxicity. For example, because cytotoxic studies look only at cells in culture, they don't tell scientists what happens inside the body, where cellular repair mechanisms, whole-organ and whole-body processes come into play. "Cytot...Amyloid fibers sprout one step at a time
...ught to understand the dynamics of how the amyloid puzzle pieces assemble themselves. They analyzed the timing of the yeast prion protein assembly, and how that varied with different concentrations of the fiber and of the individual units, or monomers, that add to the growing fibers. The researchers also ex...Breaking new ground in germ cell guidance
...cteristics of more mature germ cells en route. The puzzle of how these cells find their way through the developing body has challenged biologists for years, but is now beginning to yield to their painstaking efforts toward identifying the underlying mechanisms that guide these travelers on their way. Kazuko...Rare deficit maps thinking circuitry
...s and then construct a replica, as in assembling a puzzle a key cognitive deficit experienced by people with Williams Syndrome. In addition to this visuospatial construction deficit, people with Williams Syndrome also tend to be overly friendly and anxious and often have mental retardation and learning dis...How an insidious mutation fools DNA replication
...d thymine -- naturally complement one another like puzzle pieces. In normal DNA, a guanine matches with a cytosine, and an adenine with a thymine. However, stray reactive oxidizing molecules in the cell can alter guanine to become an "8-oxoguanine" that can lead to a mismatch. This mismatch occurs in the pr...Researchers report new gene test for isolated cleft lip and palate
...e with clefts," said Murray. "That was actually a puzzle and remains so a little bit because it's both the ancestral and common sequence, which is found in 97 percent of Europeans." "What we strongly believe is happening is the valine serves as a marker for some other mutation nearby within the gene that's...Emory researchers map structure of anti-cancer molecule
... national laboratories, have solved the structural puzzle of how an emerging class of promising cancer drugs...which was essential for putting the pieces of this puzzle together." He says that in addition to this basic research, it is hoped that the model system also w...U-M scientists find common virus in human prostate tissue
... but not in the nucleus, an important piece of the puzzle fell into place. "We know that for p53 to function as a tumor suppressor gene, its protein product must be in the cell's nucleus," explains Imperiale. "TAg apparently sequesters p53 protein in the cell's cytoplasm, preventing it from en...New drug shows promise against Gleevec resistance in mice
... As Kuriyan prophetically stated at the time, "The puzzle of STI-571's extreme affinity and specificity is of broader interest because protein kinases are crucial elements in signal transduction pathways that control cell growth, cell death and other processes. Thus, understanding how kinases are turned on ...Rutgers chemist uses NMR to elucidate protein-DNA interaction
...rofessor Babis Kalodimos offers a solution to this puzzle in his paper, "Structure and Flexibility Adaptation in Nonspecific and Specific Protein-DNA Complexes." Kalodimos' findings may be the clue researchers need to develop future methods to inhibit the expression of certain genes that may pre-dispose ind...Study reveals evolution on the (butterfly) wing
...Michael Serfas add a new piece to the evolutionary puzzle of the butterfly wing. By comparing among species the molecular machinery that controls wing development, the researchers are revealing how the regulation of two key genes has evolved in association with specific color patterns. The color patterns th...Researchers discover how worms' noses sense oxygen
... which is why CO is toxic: it replaces oxygen. The puzzle has been why the heme in guanylate cyclase is able to exclude oxygen from its binding site and reserve it only for NO. This molecular question - the key to understanding how NO works - has been a focus of the Marletta lab, and pursuit of the answer l...Digital evolution reveals the many ways to get to diversity
...wer questions of evolution that are a piece of the puzzle of understanding ecology. "The better we understand how our world came about, we can begin to understand how to deal with it," Ofria said. "Diversity is important to understand."...Noah's modern ark: The role of ART in conserving endangered species
...ogrammes. Conservation is like an enormous jigsaw puzzle with lots of pieces. ART is only one piece, so with ART alone one could hardly complete the puzzle and contribute to conservation. What makes our field so different (and fun) is the need to work wit...Origin of West Indian insect eater much older than previously thought
...at, and when, Springer said. "It's like a puzzle with a few more pieces now answered but a lot of pieces still missing," he added. ...Ecosystem bounces back from hurricanes
... more vulnerable to fishing." Another piece of the puzzle involved the areas where the blue crabs colonize, Eggleston says. Floodwaters from the rivers impeded the movement of post-larval stages of the blue crab from seawater inlets to their nursery habitats along the western shore of Pamlico Sound. Egglest......ocess," Tatar says. "So the research fits some key puzzle pieces together. And it should change the way we think about aging." Tatar's research is part of a growing body of evidence linking low insulin levels to increased longevity. In recent years, scientists have found that mice and other animals live lon...Embryonic stem cell - based tissue engineering may help repair damaged heart muscle
...Kofidis hopes that they have the two pieces of the puzzle needed to successfully integrate regenerative cells into the damaged heart, maintain its geometry and restore its function. "A word of warning may be appropriate here. Only a few years ago many people thought an artificial heart was around the corner......chnology) have discovered a piece of the molecular puzzle of this disease. Two small 'heat shock' proteins turn out to be crucial - faults in the coding genes lead to the disease. Additional research has shown that these proteins play an important role in many other neurodegenerative disorders as well. This...