jump 2 1

Tag: "jump" at biology news

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...“We are the first to show cultures potentially can jump from group to group if you offer chimpanzees the opportunity to watch other groups. It’s a bit like Westerners learning to eat with chopsticks."...

Newborn neurons like to hang with the 'in' crowd

...hin the existing network of neurons. The newcomers jump right into the fray and preferentially reach out to mature brain cells that are already well connected within the established circuitry, report scientists at the Salk Institute for Biological Studies in the online edition of Nature Neuroscience. A...

Scientists identify prion's infectious secret

...old questions, such as why some prion diseases can jump from one species to another but others can’t. Tessier and Lindquist say it is likely that natural prions contain more than one recognition element, and recognition elements can slide into a neighboring region. Many external factors can determine whic...

Changes in amino acids in the 1918 influenza virus cut transmission

... tract of humans. For an avian virus to be able to jump to humans and to start a new pandemic, it has been hypothesized that the hemagglutinin needs to mutate and change its binding preference from alpha2-3 to alpha2-6 sialic acids. In this study, the researchers used ferrets as an animal model of h...

A first glimpse of the influenza replication machine

...se, contribute to the ability of the bird virus to jump the species barrier to humans. Researchers from the European Molecular Biology Laboratory (EMBL) in Grenoble and Heidelberg, the Institut de Biologie Structurale (IBS) and the Unit of Virus Host Cell Interactions (UVHCI)*, both in Grenoble, have now ...

When smell cells fail they call in stem cell reserves

...ring cells die, the scientists say, the stem cells jump into action. A report on the discovery will appear online next week in Nature Neuroscience. “These stem cells act like the Army Reserves of our nose,?explains lead author Randall Reed, Ph.D., a professor of neuroscience at Johns Hopkins, “supportin...

Mysterious 'neural noise' actually primes brain for peak performance

...around us. But if we want to do something, such as jump over a stream, we need to extract data that is not inherently part of that information. We need to process all the variables we see, including how wide the stream appears, what the consequences of falling in might be, and how far we know we can jump....

Genetic surprise confirms neglected 70-year-old evolutionary hypothesis

...ugh which speciation can start. If the right genes jump around in the genome, a population can begin creating individuals that can't successfully mate with the general population. If other speciation pressures, like geographic isolation, are added to the mix, the pressure may be enough to split one specie...

Cancer stem cells linked to radiation resistance

...cases, the researchers observed a roughly fourfold jump in the number of glioma stem cells present in the tumor tissue following radiation treatment. Because ionizing radiation works primarily by causing permanent damage to the key genetic material of cells, DNA, the researchers hypothesized that the g...

Tigers get a business plan

...ay run below ten individuals may see tiger numbers jump four-fold over the next decade. It is these types of hard numbers that attracted have attracted venture capitalist and WCS trustee Michael Cline and Tom Kaplan, both of the Panthera Foundation to pledge $10 million over ten years to help fund th...

Today's babies are fatter babies

...eased from 6.3 percent to 10 percent, a 59 percent jump (based on weight and height measures documented in...age groups studied, these infants had the greatest jump in risk of becoming overweight, at 59 percent, and the number of overweight infants increased by 74 ...

Life and death in the hippocampus: what young neurons need to survive

...l gear required for a young neuron to successfully jump into the fray and hook up with other cells. In a study published in a forthcoming issue of Nature, researchers in the lab of Fred H. Gage, Ph.D., a professor in the Gene Expression Laboratory and the Vi and John Adler Chair for Research on Age-Rel...

Spinal cord bridge bypasses injury to restore mobility

...nimal that suffered the spinal injury. Next, they jump started neural traffic by allowing many nerve fibers to exit from the end of the bridge. This was accomplished, for the first time, by using an enzyme that stopped growth inhibitory molecules from forming in the small scar that forms at the exit ram...

UAB researchers confirm HIV-1 originated in wild chimpanzees

...lp us begin to unravel how and why SIVcpz made the jump to humans." ...

Malaria, potato famine pathogen share surprising trait

...y ?there's no chance that the potato pathogen will jump to humans, nor is it likely that the malaria parasite will start infecting plants. However, he said it's feasible to think that one day researchers could develop a drug with a dual purpose ?one that would stop both Plasmodium falciparum, which cause...

Epidemic of unneeded amputations

... patients and their families. But physicians often jump too quickly to amputation rather than exploring medical advances that can prevent limb loss," said Dr. Craig Walker, of the Cardiovascular Institute of the South, in Houma, La. Walker is a pioneer in a medical procedure to combat these trends: Cool ...

Genes affecting blood pressure change as children become adults

...nother three or four years, there is another large jump in new genetic effect," he says. Despite conventional thinking, this scientist who focuses on genetics, was not totally surprised to see the novel genes show up during puberty ?although the amount of change surprised him ?but suspects gene expression...

Genomics-based vaccine could prevent deadly cattle disease

...thor and molecular biologist at TIGR. "It's a huge jump forward." To make the jump, researchers used the genome sequence of the parasite responsible for East Coast fever. A tick-borne parasite, Theileria parva , causes the disease. When ticks infected with T. parva bite cattle, they transmit the paras...

Minor mutations in avian flu virus increase chances of human infection

... virus to switch receptor specificity and make the jump to human-to-human transmission. The glycan microarray technology, which was used to identify the mutations which could enable adaptation of H5N1 into the human population in the laboratory, could also be used to help identify new active virus strai...

Cell barrier shows why bird flu not so easily spread among humans

...he system that makes it difficult for the virus to jump from human to human. The finding, reported today (March 23, 2006) in the journal Nature, is important because it demonstrates a requisite characteristic for the virus to equip itself to easily infect humans, the key development required for the viru...

1 2 3