Birds take cues from their competitors
...dicts that overlap in resource use between species results in costs and divergence of niches, Seppnen said. However, our results suggest that if information possessed by another specieseven by a strong competitoris valuable enoug...Greenland's ancient forests shed light on stability of ice sheet
...d still contribute to a rise in sea levels." The results also show conclusively that ancient biomolecules from the base of ice cores can be used by scientists to reconstruct the environments hidden underneath ice-covered areas and can yield insights into the climate and the ecology of communities from the ...Oldest DNA ever recovered suggests earth was warmer than previously believed
...in Greenland was from 2.4 million years ago. The results of the research were published today in the journal Science. "These findings allow us to make a more accurate environmental reconstruction of the time period from which these samples were taken, and what we've learned is that this part of the world...Engineered blood vessels function like native tissue
...f Chemical and Biological Engineering. Our results show that bone marrow is an excellent source of adult stem cells containing smooth muscle and endothelial cells, and that these stem cells can be used in regenerative medicine for cardiovascular applications, said Stelios T. Andreadis, Ph.D., associa...MU researchers make discovery in molecular mechanics of phototropism
...phorylated, or lost their phosphate group. These results suggest that the absorption of light by phot1, the dominant receptor controlling phototropism, leads to NPH3s loss of a phosphate group, allowing further progression of phototropic signaling. We found that exposure to directional blue light stimul......biological life and the climate in Greenland. The results have just been published in the prestigious scient...es. Climate theories over-turned The research results are the first direct proof that there was forest in southern Greenland. Furthermore Willerslev foun...Amoebae control cheating by keeping it in the family
...l relatedness," Queller said. Gilbert said, "Our results answer the big question of why altruism persists. It persists because high relatedness prevents the spread of socially destructive mutants."...New 'asthma gene' could lead to new therapies
...g Institute and coordinator of the study, said the results are the strongest genetic link yet to child onset asthma. ...Complex ART procedures more likely to lead to umbilical cord abnormality
...ccording to its invasiveness and complexity. The results showed not only that cord abnormalities occurred more frequently in ART twins, but that they varied according to the technique used. We found an incidence of velamentous insertion, where the cord attaches to the placental membrane, of 3.6% in s...Researchers identify genetic mutation that may alter tumor cell proliferation
...drug discovery efforts. Activation of this pathway results in cancer cell growth and cell survival. Although AKT1 is central to pathway activation, its role in cancer has been that of an intermediary between mutated upstream regulatory proteins and downstream survival signaling proteins. This is the first e...Pre-implantation genetic screening reduces both ongoing pregnancy and live birth rates in over 35s
...rsity of Amsterdam, The Netherlands, said that the results of his teams research suggested that PGS should not be carried out routinely in women of advanced maternal age. In a randomised double-blind trial, the team compared three cycles of IVF with and without PGS in women from35 to 41 years of age. Of ...Skin rash actually signifies better outcomes for pancreatic and lung cancer patients
...s) or a grade 1 rash (5.7 months). These different results may be associated with the addition of gemcitabine with Tarceva, or the lower dose of Tarceva in this study, but we just dont know, he said. Wacker points out that lack of a rash doesnt necessarily mean that patients will not benefit from Tarceva. ...Wolves of Alaska became extinct 12,000 years ago, scientists report
... Museum of Natural History. They then compared the results with modern wolves and found that the two were genetically distinct. The ancient Alaskan gray wolves are all more similar to one another than any of them is to any modern North American or modern Eurasian wolf, said study co-author Blaire Van Valke...From clinical cancer research: rethinking therapeutic cancer vaccine trials
...nt chemotherapy or hormone treatment. The specific results or endpoints of these clinical trials, however, were not the long term survival of patients, but rather the degree to which the vaccine caused tumors to shrink. According to the researchers, since they didnt achieve their primary endpoints, these v...Faulty cell membrane repair causes heart disease
...eakness caused by a muscular dystrophy defect. The results are published in the July 1 issue of the Journal o...n in mice with either of the single mutations. The results suggest that dysferlin might provide some protection against heart damage in Duchenne patients, at l...Manganese levels increase in scrapie-infected sheep before clinical symptoms develop
...ey do show some indications that scrapie challenge results in similar metabolic changes as occur in non-resistant sheep. Another interesting finding was that although levels of manganese were elevated, there were differences in the blood levels of selenium and molybdenum in experimental and field cases of ...Chronically sleep deprived? You can't make up for lost sleep
...rmance on tasks declined. The Northwestern teams results suggest that animals may undergo a change in their need for sleep, or in their sleep homeostat, in situations where normal sleep time is prohibited or where sleep could be detrimental for survival. An extreme but realistic example of this, says Turek...Tough tubes -- Carbon nanotubes endure heavy wear and tear
...orm as well as soft tissue. The team is also using results from this study to develop mechanically compliant electrical probes and interconnects....Antibody linked to MS significantly higher in spinal fluid of blacks
...arch for correlations in follow-up studies." The results are published in the July 3 issue of Neurology. Epidemiologists estimate that 400,000 people in the United States have MS. Symptoms, which often strike in episodic bursts, include bladder and bowel dysfunction, memory problems, fatigue, dizziness, d......ved in heart failure and muscular dystrophy. Their results appear in the July 2 issue of the Journal of Clini...hard Lee from Harvard Medical School discuss these results and how mutations that predispose cells to membrane damage or impair the normal repair process cause...