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Tag: "attempt" at biology news

Advance helps explain stem cell behavior

...nditions now thought to be incurable. "You can't attempt to cure a disease or repair a problem if you don't know what molecular players are involved," Gross said. "That's what we're moving towards. We now have a better idea of some of the key components in this process."...

Ocean temperature predicts spread of marine species

...how a fish population is replenished if we want to attempt to manage or conserve it." Using data from 72 marine species, including cod, herring, American lobster, horseshoe crabs and clams, O'Connor and her colleagues developed a model that predicts how far larvae travel at a certain temperature. The pred...

High dopamine transporter levels not correlated with ADHD

...s a result of down regulation ?that is, the body's attempt to compensate for lower dopamine levels by reducing the number of reuptake proteins. This would explain the positive correlation between transporter levels and inattention: as the number of reuptake proteins rises, the amount of dopamine would declin...

AIDS study challenges conventional treatment guidelines for HIV patients

... basis of each patient's initial viral load, in an attempt to reproduce more closely the situation that a phy...viral loads. Until now, however, there had been no attempt to quantify how well this observation held when considering the estimated rate of CD4 cell loss for ...

Beauty and the brain

...king with random-dot and geometric patterns ?in an attempt to "use stimuli that were free of reproductive content," Winkielman says, and would "get at a general principle of cognition" ?Winkielman and his colleagues first "prepared" participants' brains to perceive a prototype and then asked them to categori...

Fire ant-attacking fly spreading rapidly in Texas

...s should be seen as "getting to first base" in the attempt to control red imported fire ants with phorid flies. In their native Argentina, where Gilbert and his collaborators study the ants and flies, fire ants are assaulted by as many as 12 different kinds of phorid fly in an area smaller than a football...

Parasitic plants sniff out hosts

... disk and the dodder plant was allowed to grow and attempt to locate its host. Dodder plants search for hosts by growing and moving in a circular pattern. In the past, many assumed that the search was random and the location of a host simply a chance encounter. After four days, when the plant was growing ...

Combination therapy shows promising results in patients with advanced lung cancer

...ng doses of a COX-2 inhibitor in lung cancer in an attempt to define an optimal biological dose. Larger trials of combination therapies utilizing this dose will now be required." The biology of an individual's tumor determines whether they will respond to Tarceva. Because researchers don't yet fully underst...

Fly's courtship sheds light on the formation of innate behaviors

... fly Drosophila melanogaster. The male fly, in its attempt to mate, will perform a series of complex behaviours ?including following females, singing, licking, and tapping ?that are not based on the fly's past experience. One gene, fruitless, has been shown to be pivotal to the emergence of these stereotypic...

Evolutionary forces explain why women live longer than men

...ate engage in a riskier pattern of behaviors in an attempt to get ahead, he said. ...

Drug dials down the energy within cells, UM researchers find

...ective, homing in on disease-causing cells. In an attempt to better exploit its therapeutic properties, the researchers have been studying the details of Bz-423's activity. They learned that the compound targets an enzyme inside mitochondria, the energy factories of cells. The specific enzyme, F1F0-ATPase, ...

Scientists tie several cancers to common 'oncogene engine'

... tumor's growth.In the short term, clinicians will attempt to exploit this interconnectedness by using therapies that may be effective against one tumor to try to treat other tumors, said Fisher. "In the longer term, the focus is on targeting the real culprit ?and that is the MiT transcription factors or the...

Female guppies risk their lives to avoid too much male attention

...hip displays don't impress the females, males will attempt to sneak mating with them when they aren't looking," says Croft. Male guppies are brightly colored to attract female attention, while female guppies are a dull brown color. The researchers show that female guppies might use this color difference to...

Hope I die before I get old?

...aged people to "midlife crisis" behavior in a vain attempt to slow their own aging. Stereotypes about aging abound in our society, Lacey says, and affect the way older people are treated as well as the public policies that affect them. That's why research on the beliefs that fuel those one-size-fits-all d...

Prevention is the best option: fighting autoimmune diseases

... patients during the later stages of disease in an attempt to fight it." IBD is usually diagnosed in children and young adults. It affects 1 in 200 people and an estimated 100,000 Australians and there is no cure. "Regulatory T cells have previously been difficult to quantify in humans and conventional met...

Loosen up, DNA: Leukemia gene changes genetic packaging

... at the way whole sets of genes are packaged in an attempt to turn on or off several genes at a time. It's part of a field known as "epigenetics": Now that the sequence of chemical bases that make up our genes is largely known, scientists are turning more attention to broader mechanisms of how the body contr...

Light guides flight of migratory birds

...ks or scratches on the sides of the funnel as they attempt to take flight in the migratory direction. A problem arises, however, because funnels block the lower 20 degrees of the sky. In the only two experiments (out of 30 or so) carried out during migration where birds were exposed to the cue conflict with ...

Smooth sailing: 'cruise ship virus' tackled by UH, Baylor College of Medicine

...vered with Norwalk antibodies provided by BCM. An attempt will be made to wash away the sample, but if the virus is present in the sample, it will bond with the antibody and remain on the slide. The next step of the test relies on retroreflectors, specially designed cubes that reflect light back to its ...

Spinal cord bridge bypasses injury to restore mobility

...as discovered that axons are alive and continue to attempt to grow for years. Silver describes them as "trucks stuck in mud going no where." It also explains why some people gain some movement back or come out of comas after many years as the nerve fibers sprout through weakened or remodeled areas of the s...

How plants avoid feeling the burn

... To get at the heart of the problem, Fisher had to attempt an experiment that had never been done before for any biomolecule: to control the charge of the biomolecule while measuring its ability to hold a current. By holding a carotenoid under potential control, Fisher could control whether the biomolecule...

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