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Tag: "observation" at biology news

Blood test may help signal tumor's remission, return in throat cancer patients

...urrently used to monitor a patient’s progress, but observation by these methods has been difficult due to the scarring that occurs from radiation. “Finding better markers for detecting cancer as it begins and then monitoring the course of treatment is a major goal of the NCI and this research in head and neck...

A new plant-bacterial symbiotic mechanism promising for crop applications

...to the plant and set off nodulation. The first observation was that the bacteria did not penetrate the roots of its host-plant by the hairs. It took advantage of “crack zones” comparable with wound areas. The set of results obtained from subsequent work, seeking to identify the genes involved in producing th...

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...t is difficult to prove behaviors are passed on by observation and learning. In this study, members of the international collaborative research team taught forms of tool use and food extraction techniques to high-ranking individuals in four different captive chimpanzee communities. Researchers then observed ...

Undergraduate research shows leaderless honeybee organizing

...,” Schneider explained. “We constructed a special observation stand where we could actually see how workers were interacting with queens inside a swarm cluster, where they are hanging in a tree. That was really interesting, because nobody had ever really been able to look at that before,” he noted. “What was...

Study finds mix of disease processes at work in brains of most people with dementia

...urology online today. Among their findings is the observation that the combination of Alzheimer’s disease and cerebral infarcts (strokes) is the most common mix of pathologies in the brains of people with dementia. The implication of these findings is that public health efforts to prevent and treat vascular dis...

'Personality-gene' makes songbirds curious

..."trees" (see figure 1) after being released in the observation room. In a second test, they quantified the reaction of the bird towards each of two unknown objects that had been put in its cage. One such novel object was a pink panther (see figure 2). The results from the group of selected birds were confirm...

Newborn neurons like to hang with the 'in' crowd

...he existing network to 80 percent, reinforcing the observation that using one's brain cells is the best way to optimize brain function throughout one's lifetime. ...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...y used as a dietary supplement. This unexpected observation "may be due to chance, however beta carotene is already known to increase risk of lung cancer and cardiovascular disease in smokers," Peters said. "While it would be counter-productive to advise people against eating carrots and leafy vegetables,...

Study of protein folds offers insight into metabolic evolution

...talysts of life. This idea is based in part on the observation that RNA still retains many of its catalytic capabilities, including the ability to make proteins. Gradually, according to this theory, proteins began taking over some of the original functions of RNA. "The most ancient (protein) molecules were in...

Bats get the munchies too!

...d sucrose as being beneficial. “We think that this observation may be due to a matter of taste or flavour? explains researcher Francisco Sanchez, “The perception of sweetness versus bitterness may vary according the type of sugar and the amount of ethanol consumed. The combination of sucrose and ethanol may just...

Get a whiff of this: Smell test could sniff out serious health problems

...ts. “The whole test is based on the very simple observation that when you sniff and you detect a smell, you take a smaller sniff than if you inhaled and didn’t detect a smell,?Frank explains. “For someone with normal sense of smell, the size of the sniff when detecting an odor is cut in half. For someone who ...

Study suggests some drug resistance to influenza B medications

...riants may be here to stay. In light of the recent observation that oseltamivir may be less effective against influenza B than against influenza A, an important concern is whether suboptimal dosing for these viruses will lead to increased selection of viruses with high-level resistance.? “Influenza viruses evo...

Gut research yields new anti-cancer approach

...e of cancer death for women. "This is the first observation of a small molecule dramatically reducing levels of the proteins called tubulins, the building blocks of cancer cell skeletons," said Katherine L. Schaefer, Ph.D., a research assistant professor within the Department of Medicine, Gastroenterology and...

Mine runoff continues to provide clues to microbial diversification

...nsive gene transfer in bacteria, this is the first observation of exchange of huge genomic blocks in a natural microbial community. “Consequently, this provides important information about the conservation of genetic resources to enable life to survive and thrive,?said ORNL’s Bob Hettich, a co-author and memb...

Imaging pinpoints brain regions that 'see the future'

...peculation has been based largely on the anecdotal observation of very young children, cases of severe depression and brain damaged persons with amnesia. "There's a little known and not that well investigated finding that if you have an amnesic person who can't remember the past, they're also not at all good ...

Tracking sperm whales and jumbo squid

...oday as they were when Melville made the following observation in Moby-Dick: "For though other species of whales find their food above water, and may be seen by man in the act of feeding, the spermaceti whale obtains his whole food in unknown zones below the surface; and only by inference is it that any one can ...

Iowa State University botanists identify new species of North American bamboo

...er with traditional plant taxonomy, which involves observation and description of a plant's form, anatomy, ecology and other characteristics. "We want to get the big picture of how all the temperate bamboos are related to each other. That means taking inventory of what exists, then comparing notes," Clark sai...

ESA launches new project to protect biodiversity

...loped to relate to the different areas where Earth observation (EO) technology may contribute to the conservation...he first time we will go one step further in Earth observation measurements ?'from space to place'." MarViva, a non-governmental organisation working to promote...

Scientists discover a new risk factor for Alzheimer's

...sease," said St George-Hyslop. "We started with an observation from pathologists, showing reduced SORL1 protein l...ins of patients with Alzheimer's. Then we have the observation by us and other groups that if you reduce SORL1 expression--in either cell cultures or mice--you get...

Lead with a poisonous electron shield

...misphere is filled by the free electron pair. This observation may help in the design of future lead-specific antidotes....

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