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Tag: "opportunity" at biology news

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...p 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."...

Study investigates 'divorce' among Galapagos seabirds

...s 50 percent more males than females, creating the opportunity for females to trade a current mate, which may be worn-out from recent breeding effort, for a ‘refreshed’ non-breeding male,” Maness said. It takes a lot of energy to raise a chick and the responsibility is shared by both males and females. They ...

The mouflons of the Kerguelen archipelago

...e local authorities decided to offer residents the opportunity to hunt mouflons (a type of wild sheep). A pair of Corsican mouflons was imported from the Vincennes Zoo in Paris. Initially, the mouflon population grew exponentially, and then, from the early 1980s, it fluctuated between 300 and 700 individuals. ...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...ed to control spore formation and germination when opportunity arises. "C. botulinum shows us one extreme of the ways that bacteria can make the most of animal hosts," explained Dr Julian Parkhill of the Wellcome Trust Sanger Institute. "Some organisms use subtle approaches, elegantly choreographing their in...

Students invent protective pouch to enhance cell therapy

...ly and Bulte. "I don’t think I could have found an opportunity like this anywhere else," he said. "That’s one of the major strengths of Johns Hopkins." Link plans to continue working on the project in the university’s biomedical engineering master’s degree program. ...

World's leading scientists announce creation of 'Encyclopedia of Life'

...y, the Encyclopedia of Life will provide users the opportunity to personalize the learning experience through its "my eol" feature. The site can be made available in all major languages and will connect scientific communities concerned with ants to apples to zebras. As part of its work, the Encyclopedia of Lif...

The quest for an effective HIV vaccine presents new possibilities, challenges

...rvoir of infected cells in the body. The window of opportunity to prevent long-term HIV infection may close permanently once a pool of latently infected cells is in place, Drs. Johnston and Fauci note. Neutralizing antibodies, which can attach to and eliminate free virus, only appear after HIV levels have declin...

Latent memory of cells comes to life

... by new nucleosomes. Cell division is therefore an opportunity for changes in the nucleosomal composition of a specific DNA region. Changes can also happen during the lifetime of a cell due to chemical reactions allowing interconversions between the different nucleosome types. The effect of these changes can be ...

Researchers develop marker that identifies energy-producing centers in nerve cells

...ience. The marker gives scientists the first-ever opportunity to distinguish between energy-producing structures, called mitochondria, in neurons, from mitochondria in other brain cells, called glia. Defects in mitochondria may be part of the process that leads to Alzheimer's and Parkinson's disease, as well as...

Sandia researchers take new approach to studying how cells respond to pathogens

...s range from green to red and give researchers the opportunity to track proteins and see, for example, the dynamic cellular production of proteins or protein-binding processes inside or on the surface of the cells. The team is developing one platform with two complementary microfluidic modules -- one for trap...

Study suggests some drug resistance to influenza B medications

...caused a widespread epidemic in Japan, creating an opportunity to assess the effectiveness of neuraminidase inhibitors. The researchers collected influenza B isolates from 74 children before and after oseltamivir therapy and from 348 untreated patients with influenza (including 66 adults). Four hundred twenty-tw...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...e saiga antelope provides scientists with an ideal opportunity to investigate the effects of mixed-sex twin litters on size and development, because there are a high proportion of twin births in the population, and because the optimal birth weight for males and females of the species are dramatically different. ...

Female chimps keep the bullies at bay

...ation to increase their reproductive success. The opportunity for males to coerce females is reduced when females avoid synchronizing their estrous cycles, because with fewer females in estrous at the same time, mating competition between males intensifies. As a result, there is an increased probability that h...

Woven scaffolds could improve cartilage repair

...nsmission. "The scaffold will give surgeons the opportunity to treat their patients immediately, while patients won't have to wait for months with their painful joint," Guilak said. Most machines that produce fabrics weave one set of fibers that are oriented perpendicularly to another set of fibers. Howeve...

OHSU surgeon implants donated tissue allografts

...has already seen the benefit for his patients. The opportunity to correct disability and restore joint function offers the patients the chance to return to a healthy, pain-free and productive life. Crawford said the collaboration between CTS, JRF and OHSU "has been exciting and I am delighted I could be an i...

Tracking sperm whales and jumbo squid

...authors wrote. "This research provided a unique opportunity to learn more about two species that are very difficult to study in their natural habitat," Davis noted. "In the future, this co-tagging approach should yield new insights into predator-prey interactions with other pelagic species that are large enou...

When your brain talks, your muscles don't always listen

...ing a summer research experience, where he had the opportunity to work with wheelchair athletes. "People with severe spinal cord injuries have limited cooling because they can't perspire below the site of injury," Knight said, "so their core body temperature can reach dangerous levels." In graduate school,...

Massive coral death attributed to earthquake

...now dominate the shallow reef." "This is a unique opportunity to document a process that occurs maybe once a century and promises to provide new insights into coral recovery processes that until now we could only explore on fossil reefs" says Dr Baird. Dr Campbell adds "The news from Simeulue is not all bad....

Cocoa 'vitamin' health benefits could outshine penicillin

...n the number of vitamins would provide significant opportunity for nutritional companies to expand their range of products. Flavanols like epicatechin are removed for commercial cocoas because they tend to have a bitter taste. So there is huge scope for nutritional companies to develop epicatechin supplements or...

Cold sore virus might play role in Alzheimer's disease

...ge of its life cycle, suggesting it has more of an opportunity to replicate. In animals with the ApoE-2 gene, the virus was less active. The work suggests that ApoE-4 may alter the balance between the HSV life cycle forms. It's possible that the ApoE gene works as a sort of bodyguard that tries to keep cells ...

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