Modern global warming more damaging than in the past
...he fragmentation of the islands, the reptiles were stuck in their individual habitats. As temperatures increased, more heat-tolerant reptiles were not able to replace those that died out on the island, and whole populations were lost. These areas experienced a net lost of diversity in marked contrast to th...Study shows prions stick around in certain soils
... water solution, whereas those in the clay mixture stuck to the particles' surface. "Almost all the prions in the clay mixture associated with the clay, not the water," says Pedersen, adding that this finding suggests that the movement of prions through the landscape depends on the soil environment. Under...Hopkins researchers discover how nitric oxide prevents blood vessel inflammation
...pounds. The researchers then found that platelets stuck to blood vessels more often in mice that could not make NO, compared to normal mice. The findings already have led Lowenstein's team to develop a novel drug to block exocytosis, thereby acting as an anti-clotting agent. It is a peptide that blocks e...Lab tests can reveal how patients respond to Gleevec
...ve a mutant form of KIT that acts like a gas pedal stuck to the floor, providing a constant stimulus for GIST cells to grow," Heinrich said. A fast-tracked clinical trial proved this hypothesis, and the drug was approved by the FDA in 2002 for patients with advanced GIST. The clinical trial was perform...Growth hormone activates gene involved in healing damaged tissue
...rowth hormone to turn on Foxm1b, the gene remained stuck at the low level of activity found in old age, and liver cells failed to multiply rapidly enough for a quick recovery. Further tests were done with genetically engineered mice in whose liver cells the Foxm1b gene had been disabled. In these mice, gr...How lice and bird feathers stick together
...the experiment showed most of the rock pigeon lice stuck to feathers, no matter what species of bird was the source of the feather transplant. "I had one louse on the fan for seven hours," Bush says. "I gave up before it did." -- The third and conclusive experiment revealed why a bird's size matters to t...Scientists announce long-sought mouse model of human pancreatic cancer
...er patients. Among them are KRAS - a growth signal stuck in the "on" position, resulting in unchecked cell growth - and several genes that normally suppress tumor formation, including INK4a/Arf, p53, and SMAD4. Because the basic mechanisms of pancreatic cancer are so poorly understood, scientists have bee...Purdue research suggests 'nanotubes' could make better brain probes
...d the researchers to calculate how many astrocytes stuck to the nanotubes. About 400 astrocytes per square centimeter adhered to the nanotubes containing the small surface features, compared to about 800 for nanotubes not containing the small surface features. The researchers repeated the experiment while ...New 'bumpy' jelly found in deep sea
...atteries of stinging cells on the jelly's bell and stuck there. The prey then moved slowly down to the edge if the bell. At that point, the jelly transferred the prey to one of its oral arms, where it slowly moved up the arm and into the mouth. Unlike other jellies who capture food with their bells, S. ve...University of Colorado archaeologist, colleagues hot on the trail of ancient Persian warships
...s a counterweight and also allowed the shaft to be stuck in the ground when in was not in use. "It could be used as a weapon of last resort if the shaft with the iron point had broken or was lost during combat," he said. The researchers were able to get a close-up view of the spear butt-spike with the rem...Stem cells found in adults may repair nerves
...ury but get caught in the scar. It's like they're stuck in the mud," Horner said. "We're studying ways that this process is regulated to see if it can be manipulated to promote healing. In other words, we're looking at ways to get the axons out of the mud. One way is to make the mud less sticky by manipul...UVa researchers describe method of protecting chromosomes during cell division
...of the cell bind the same chromatid, which becomes stuck since it is pulled in both directions, Stukenberg said. According to the study, researchers at the U.Va.'s Department of Biochemisty and Molecular Genetics, working with colleagues in U.Va.'s Department of Chemistry, have uncovered a mechanism that ...Faulty DNA replication linked to neurological diseases
... sequences, however, the replication machinery got stuck and replication stalled. According to Mirkin, this...d longer threads of DNA. "It's like a car getting stuck in a pothole. You keep spinning the wheels to get out of the pothole, but the more the wheels spin, ...How DNA copying enzyme 'stops the presses' for repair synthesizing enzyme
...ted at all, which is that some mismatches just get stuck and don't translocate." Although Beese emphasized that their studies are quite basic, such findings could help explain how the polymerase-triggered repair system is affected by DNA damage from carcinogenic chemicals. The next steps in their research,...Why passive smoking hinders healing
...o increased the number of points at which the cell stuck to the Petri dish, sites that could be identified by the presence of 'focal adhesion plaques'. In a separate experiment, the researchers showed that fibroblasts that had been cultured in the 'smoky medium' were less mobile than control cells. During ...Physics tip sheet #41 - April 5, 2004
... phenomena such as ketchup or toothpaste that gets stuck in a tube, researchers have studied a suspension of plastic beads in a liquid being sucked through a narrow tube. The researchers varied the size and concentration of the plastic beads, and found that if the proportion of beads exceeds a critical amo...UCR study says second-hand smoke affects healing
...o increased the number of points at which the cell stuck to the Petri dish. In the paper, titled "Effects of 'second-hand' smoke on structure and function of fibroblasts - cells that are critical for tissue repair and remodelling," the researchers wrote: "These effects can contribute to abnormal healing an...Kinase backgrounder: Iressa discovery part of major kinase project at Dana-Farber
...yrosine kinases. These mutant proteins behave like stuck "on" switches, causing unruly cell growth. The bea...mplicated in cancer. These on-off proteins may get stuck in the "on" position, continuously sending signals for the cell to grow and divide, and leading to u...Scientists track protein linked to movement disorder
...ll the protein usually works. The TorsinA that was stuck to ATP moved into the nuclear envelope, the portion of the endoplasmic reticulum that surrounds the nucleus, the central compartment of the cell where DNA is kept. "Based on what's known about other proteins like torsinA, we figure this means torsinA...Stanford researchers go from heaven to Earth in 'lifeguard' test
...So they did what you'd expect from any researchers stuck in Sin City with frequent thoughts about life in outer space: They headed to a casino, downed a few cocktails and drew up a plan for the ideal physiological monitor for astronauts. But here's what you wouldn't expect: The pair's scheme ha...