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Tag: "familiar" at biology news

Blood flow in brain takes a twist, affecting views of Alzheimer's

...t goes on within our bodies. It's a supply problem familiar to anyone who worried over the availability of gasoline immediately after hurricane Katrina. In our bodies the process is particularly crucial in the brain, which is the body's most voracious guzzler of "fuel," with a constant need for oxygen. When p...

Strawberries by design

...orming apple, remarked: "The commercial strawberry familiar to most consumers is octoploid, which means that it contains eight sets of chromosomes. By using a close relative that has two sets of chromosomes and a significantly smaller genome, the researchers have found a particular type of alpine strawberry t...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...s that people with these lesions tend to associate familiar stimuli with new information more rapidly than hea...eting processes, with healthy individuals ignoring familiar stimuli as their primary strategy. It would be interesting to assess whether sleep restriction cause...

A new focus for the mechanism of nerve growth

...osin family function as molecular motors; the most familiar myosins power contraction in heart and skeletal muscles. Myosin II motors are involved in functions such as directed cell movement, cell division and wound closure. While skeletal myosins have been studied in detail, non-muscle myosins are just begin...

Web model of influenza-host lifecycles will aid scientists in creating anti-viral drugs

...parts of the influenza lifecycle they might not be familiar with, and to help researchers look at specific reactions and figure out ways to block them. "Understanding how influenza reacts with its host is really critical for the rational design of anti-viral drugs and new vaccines," said Dr. Richard Scheuerm...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

...rofessor of integrative biology at UC Berkeley, is familiar with the "so-called footprints" and knows Renne well, frequently collaborating with him in the dating of million-year-old sediments in an area of Ethiopia where White has excavated numerous fossils of human ancestors. He is not surprised at the new f...

Worms know bad food when they smell it

...eference for E. coli over the pathogen they were familiar with. The researchers went on to show that it did not take a lifetime of exposure to a toxic food source for the worms to learn to avoid it. In fact, just four hours in the presence of P. aeruginosa was enough for the worms to choose E. coli in...

Deep treasure to be found in Oculina Bank

...n to explore one of Florida's most vital but least familiar marine resources--the spectacular deepwater coral reefs of the Oculina Bank--some 30 years after their discovery. Among the team's goals is the start of a sustained and critically needed monitoring program to complement , and evaluate the effectivene...

Bacteria which sense the Earth's magnetic field

...ganelles that, until now, scientists had only been familiar with in higher organisms. (Nature, Advanced Online Publication, November 20, 2005). Magnetotactic bacteria are widespread in the mud of marine environments. In their cell interior, they form magnetosomes which are aligned into a chain. The bacteria ...

New factor implicated in allergy and asthma attacks

...xtreme shortness of breath -- symptoms agonizingly familiar to those who suffer from allergy and asthma attacks. Scientists have long assumed that they know how pollen produces such debilitating responses. They blame an overreaction by the body's immune system, set off by proteins known as antigens, which ar...

Virginia Tech football player uses prototype cast

... in medicine, the biomedical community was already familiar with the composite's characteristics. The company sent sample materials to Love, and the class was able to mold prototypes in their engineering laboratories. Then, the university hired a professional orthotist who completed one of the prototypes, a...

Long-sought flower-inducing molecule found

...ance in both agriculture and forestry. We are all familiar with the fact that different plants flower at different times of the year. Daffodils in spring, roses in summer and other plants in fall. It is absolutely vital for the plant survival to flower at exactly the right time to secure that it can pollinat...

From a Few Wild Ancestors, a Citrus Cornucopia

...also supports the generally held concept that most familiar citrus fruits -- including oranges, grapefruits, and lemons -- are actually hybrids. A Chosen Few Part of this can be explained by the fact that citrus, which is native to Southeast Asia, hybridizes readily. “Citrus has been domesticated and selec...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

...Cambrian Explosion when animals with skeletons and familiar morphologies began to bloom about 540-520 million ... organisms that lived just before the evolution of familiar animals about 540-520 million years ago. ...

Gene loss accelerates aging

...chers who did not participate in the study but are familiar with its findings include: Carol Prives (Columbia University); Judith Campisi (Lawrence Berkeley National Laboratory); David Lane (University of Dundee); Lawrence Donehower (Baylor College of Medicine) ...

Study identifies gene in mice that may control risk-taking behavior in humans

... memories and conditioned fear. "Most of us are familiar with the fact that we can remember things better if those memories are formed at a time when there is a strong emotional impact - times when we are frightened, angry or falling in love," he said. "That's called emotional-memory formation. The amygdal...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...e guys off his wheel" An independent physiologist familiar with the study commented: "This study shows that long term training has a lot bigger effects than we thought. They followed Armstrong ?a well-known hard trainer ?and the changes in his efficiency over seven years are really quite amazing. We wouldn't...

Micro-molecule plays big role in birth defects

... of genetics at the University of Wisconsin who is familiar with the research but who did not participate in it. "It indicates mutations in microRNAs might be responsible for birth defects, and this has not been discovered before. Using this same approach, we can look at other embryonic organs and ask what mi...

Frog peptides block HIV in lab study

...lity to integrate information. "Sleep is the most familiar alteration of consciousness," he says. "It happens every night to all of us. Every night, when you fall into deep sleep, your consciousness usually fades." Indeed, research subjects woken early in the night frequently report little or no conscious e...

Deep sleep short-circuits brain's grid of connectivity

...lity to integrate information. "Sleep is the most familiar alteration of consciousness," he says. "It happens every night to all of us. Every night, when you fall into deep sleep, your consciousness usually fades." Indeed, research subjects woken early in the night frequently report little or no conscious e...

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