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Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...derthals, who had survived in local pockets during previous Ice Ages, bouncing back to Europe when weather conditions improved. Climate reconstructions The study is based upon climate reconstructions elaborated from marine records and using the experience of Spanish and international research groups o...

Hearts of male and female rainbow trout are different

...Summary and Conclusions This study expands upon previous findings that sex differences in cardiac performance and metabolism exist in fish in general, and have now been found to occur in rainbow trout in particular. Moreover, the differences are only realized during working conditions and involve stimulati...

Machine preservation may promote more organ sharing

...more than 30 hours, or from donors over age 70. In previous studies with up to four years of follow-up data, Stratta has shown that success rates with these organs are equivalent to those of conventional donors, in part because of appropriate donor and recipient matching through using the pump to assess viabi...

Scripps research team sheds light on long-sought cold sensation gene

...stitute of the Novartis Research Foundation. "Many previous candidates have been postulated to play a role in our ability to sense cool temperatures, but none have withstood the test of genetics," he says. TRPM8 was first discovered by Patapoutian’s group and proposed as a key gene controlling cold sensat...

The sound of proteins

...find their music more melodic and less ‘jumpy?than previous attempts, which have focussed on DNA sequences and protein folding, and hence closer to the musical depth of popular compositions. They are currently piloting a computer program, written by a collaborator Frank Pettit, which uses their translation ru...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...led actin to propel them toward an infection. In a previous study, Southwick found that the toxin prevents actin assembly, leaving neutrophils stuck in the mud. "Actin is important because it's the motor that causes neutrophils to move," said Southwick. "So it's like cutting the gas to the motor." Anthr...

New knowledge improves rice quality

...I is very fortunate to have a strong foundation of previous rice quality research to build on," Dr. Fitzgerald said. "We needed that to ensure we made the right decisions as we move into a whole new era of rice quality research." For many years, rice breeders have focused on developing varieties that would...

Gene mutation linked to cognition is found only in humans

...ans and several species of apes and monkeys. Their previous work had shown that type II neuropsin, a longer form of the protein, is not expressed in the prefrontal cortex (PFC) of lesser apes and Old World monkeys. In the current study, they tested the expression of type II in the PFC of two great ape species...

New Brandeis research sheds light on memory by erasing it

.... However, when CaMKII was chemically attacked and previous memory erased, it then became possible to insert n...y visualize the forgetting process and complements previous work done in Lisman's laboratory showing that when LTP is induced (as during learning), CaMKII moves...

UCLA AIDS Institute researchers find a peptide that encourages HIV infection

...-100) is a circular peptide that has been shown in previous studies to inhibit the infection of CD4 cells with... The researchers had initially wanted to quantify previous research by Dr. Robert I. Lehrer, distinguished professor of medicine in the division of infectious ...

Researchers attach genes to minichromosomes in maize

...Gao, Juan M. Vega and James A. Birchler built on a previous MU discovery about the creation of minichromosomes to demonstrate that genes could be stacked on the minichromosomes. “This has been sought for a long time in the plant world, and it should open many new avenues. If we can do this in plants, many ...

DNA-damage test could aid drug development

...uch cheaper assay that's at least as predictive as previous assays," emphasizes Griffith, "and drug developers can afford to use it a lot earlier in the drug development process." It also could help to avoid issues with animal testing. "The European Union is trying to minimize animal testing," Shuga points ou...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...Brain , and have corroborated the conclusions of a previous study, published in 1999 by the same research team in the specialist journal, Neuron . The first name amongst the contributors is that of the researcher Waldy San Sebastián. On this occasion the research was extended to a greater number of non- h...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

... strategy that seals the chemical goods inside. In previous studies, his group successfully demonstrated that the caps can be chemically activated to pop open and release the cargo inside of animal cells. This unique feature provides total control for timing the delivery The team’s first attempt to use th...

MIT's ocean model captures diversity of underwater forests

...n the new model. Chisholm believes that because previous ocean models did not convey the diversity of phytoplankton, they did not well represent the systems they modeled. The new model remedies that. "Now we are finally modeling the ocean systems in a way that is consistent with how biologists think of...

Noise echoes in cell communications

...amden research team's mathematical theory improves previous knowledge by offering a single explanation of the properties of noise in hearing under different conditions. To develop the theory, Hong used a variation on the wavelet technique, which he says is responsible for clarifying the JPG image. The findin...

BMI not accurate indicator of body fat

... between body fat and muscle mass, said Ode. "A previous study of NFL football players found that a large percentage of them ?around 60 percent ?were considered obese," he said. "But when you look at an athlete like that, you see that in many cases he is not obese. Many athletes have huge BMIs because of m...

Out-of-body experiences may be caused by arousal system disturbances in brain

...lly outside their own body watching themselves. In previous studies of more than 13,000 Europeans, almost 6 percent said they have had such an out-of-body experience. Dr. Kevin Nelson and a research team at the University of Kentucky have studied the link between out-of-body experiences, the sleep-wake trans...

UCI scientists reconstruct migration of avian flu virus

...on of influenza A H5N1, the bird flu strain. While previous work informally identified H5N1 strains by location, the UCI analysis is the first to systematically track the migration of H5N1 through its evolutionary history, adding new details that identify the relative importance of the geographic and evolutio...

Blood sugar's manufacture limited by building blocks' supply

...uilding] enzymes that make it all happen. A lot of previous work has focused on the enzymes." "We've found the first defect [in glucose production] due to a loss of substrate," added Susan Gray of Brigham and Women's Hospital. During fasting, the supply of glucose derived from food dries up, Gray explai...

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