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Tag: "difference" at biology news

Immunization rates hit record high in poor countries

... fungus looks white and woolly too. But the subtle difference may mean life or death for the eastern hemlock. ...

Brain tissue reveals possible genetic trigger for schizophrenia

...researchers found for the first time a significant difference in the microRNA expression profile. Fifteen micro...he added. "Our study found a striking, significant difference in microRNA expression between people with schizophrenia and healthy people. Using bioinformatic ana...

Fungal factories may save hemlock forests

... fungus looks white and woolly too. But the subtle difference may mean life or death for the eastern hemlock. ...

Genes and genius: Researchers confirm association between gene and intelligence

...nce IQ. But this single gene isn't going to be the difference between whether a person is a genius or has below-...tions and another all of the 'bad' variations, the difference in IQ might be 15 to 20 points. Unfortunately, the numbers of people at those extremes were so small...

Cholera pathogen reveals how bacteria generate energy to live

...umps sodium ions out of the bacteria to generate a difference in concentrations between outside and inside. This gradient acts like a battery that powers essential cell functions, such as the movement of the bacterium’s tail, the flagellum. Most cells, including human cells, use gradients of protons for this...

Human preference for other species could determine whether they survive

...he work pretty conclusively shows there is a large difference of appeal among organisms, even among closely related organisms," he said. "For different kinds of organisms, different qualities seem to cause differences of appeal." The work is a signal to conservationists to be mindful of the role of public p...

ASU researchers test antibacterial effects of healing clays

...explains. "Traditional antibiotics can only make a difference at the very earliest stages of the disease, so treatments have, in the past, been largely confined to amputations or surgical excision of the infected sites." This means if the clays are antibacterial in nature and the locus for that activity can ...

New study: Preterm birth causes one-third of all infant deaths

...fants who died in 2002 were born prematurely. This difference led the CDC researchers to speculate that premature birth plays a greater role in infant death than the official reporting system indicates. The researchers proposed a new method to determine the contribution of premature birth to infant mortality. ...

More species in the tropics because species have been there longer

...in tropical and temperate regions. What causes the difference in species numbers between tropical and temperate regions is not something special about the tropics that leads to more rapid speciation, but rather that the temperate areas were colonized more recently, leaving less time for species to originate and...

The effects of smoking on fractures and ligament injuries

...s, the authors suggest that this delay is due to a difference in the recruitment of cells to the site of injury. In addition, the study found that mice exposed to smoke had impaired or delayed extracellular matrix development, shown by lower collagen type I gene expression, one week after injury. This may le...

New approach to BSE successful in lab

... prion proteins occur in healthy animals. The only difference is that they have a different shape. When there is contact with their ‘diseased twins?they change their shape, also becoming ‘diseased.?The result is an irresistible chain reaction. The malformed prion proteins can be deposited in the brain, thereby ...

Scientists show drug can counteract muscular dystrophy in mice

... mice, and biophysical studies showed virtually no difference between the muscle strength of the mice with MD given the deacetylase inhibitor and healthy mice. "This is the first example of using a drug to counteract muscular dystrophy in mouse models," says Dr. Sartorelli. Yet he points out that the drug i...

How mammals fuel milk production may have implications for cancer

...tly less than those nursed by normal mothers. That difference in weight only grew more exaggerated with time. In contrast, the researchers reported, the offspring of Akt2-deficient mice gained weight normally. The researchers further showed that the mice without Akt1 displayed a four-fold reduction in milk s...

Fast-freeze snapshot yields new picture of nerve-muscle junction

...s and components into the right place can mean the difference between feats of strength or lapses of drowsy lethargy. Several proteins that have been shown to be major players in synaptic transmission have now been studied using a flash-freeze physical-fixation technique that reveals new details of their locat...

Scientists design simple dipstick test for cocaine, other drugs

... "Our lateral flow devices take advantage of the difference in size between dispersed and aggregated gold nanostructures," Lu said. "This provides critical control for the performance of the devices." The lateral flow device consists of four overlapping pads ?wicking, conjugation, membrane and absorption. T...

Teenager moves video icons just by imagination

...quency alterations are different, will that make a difference in performance?" Leuthardt said it is too early to make comparisons between adults and teenagers because they have only one set of teenage data. "But we observed much quicker reaction times in the boy and he had a higher level of detail of cont...

Longer-lived rodents have lower levels of thyroid hormone

...ats, Pinto reported. There was also a significant difference in T3 levels between the naked mole-rats and the guinea pigs, but not between any of the other groups "These hormone concentration differences correlate with maximum species lifespan and suggest an important regulatory role of thyroid hormone in l...

Embryonic patterning makes the feathers fly

... into complicated results. For a chicken, it’s the difference between having feathers arranged in spots or stripes. For biologists at the University of Southern California and mathematicians at Oxford University in the UK, it’s all a question of patterning. To understand patterning on the molecular and the s...

Rising ocean temperatures, pollution have oysters in hot water

...dmium = power disruption However, there was no difference in oxygen consumption between the two groups acclimated to 28°C. The researchers concluded that the cadmium-exposed oysters in this group needed more oxygen than the unexposed group, but were either unable to obtain enough oxygen, convert the oxygen ...

Some butterflies travel farther, reproduce faster

... quickly This study examined whether there is a difference in physiology between the females in the newly est...agile world of a butterfly, a day can make all the difference between reproducing and not. The physiological difference The researchers delved into what was...

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