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Tag: "common" at biology news

Detecting poisons in nectar is an odour-ous task for honeybees

...isements offering sweet rewards to honeybees, some common flowers have not-so-sweet or even toxic nectars. W...crop plants, may encounter such poisoned nectar in common crop and garden plants such as Rhododendrons and almond trees. Can honeybees learn whether nectar co...

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

...ternational cultures (who are unfamiliar with some common odors in the U.S.). “What’s also unique about this test is that it does not require a good memory, which is an issue in testing people with Alzheimer’s or some other dementia-related disease,?Frank says. “For instance, other tests ask, ‘Does this sme...

Uniform language for describing genes of pathogenic and beneficial microbes

...onsortium has been working since 2000 to develop a common language of terms that can be used to describe how...ogenic, neutral, or beneficial, but all share many common processes in their interactions with their hosts. For example, all must initially attach to the host...

UCLA study uncovers clues for why Graves' disease attacks the eyes

... blindness. Graves?disease is nine times more common in women than men. The disorder most often strikes during the childbearing years, and runs an average course of one to two years. No cure exists, though surgery can be done at the end stage to correct disfigurement....

Improved predictions of warming-induced extinctions sought

... critical review of the four types of model now in common use leads the team to identify various simplifying assumptions in the models that can lead to biases. The authors make eight recommendations for improving forecasts of extinction rates under global warming. The recommendations cover a wide range, f...

Fish extinctions alter critical nutrients in water, study shows

...ies was unable to make up for the loss of the more common one. Thus, it appears that human overfishing of the common species, coporo ( Prochilodus mariae ), may have large effects on the ecosystem, in part because of ...

Rare cell prevents rampant brain activity

...te the fact that excitatory synapses are much more common than their inhibitory counterparts, the system is ...overed a mechanism that might explain how the most common type of neuron in the cerebral cortex ?the pyramid cell ?is prevented from becoming over-activated. ...

Scientists see DNA get 'sunburned' for the first time

...in damage in real time. They observed the most common chemical reaction among a family of reactions on t...ort-lived ones. But this study shows that the most common UV damage is caused by a very short-lived excited state. "The speed of this reaction has importan...

Studies force new view on biology of flavonoids

... Flavonoids are polyphenolic compounds with some common characteristics that are widely found in fruits and vegetables and often give them their color ?they make lemons yellow and certain apples red. They are also found in some other foods, such as coffee, tea, wine, beer and chocolate, and studies in rec...

Genetic fingerprints identify brain tumors' origins

... of cancer-related death in children, and the most common childhood brain tumor is the pilocytic astrocytoma (PA). Approximately 15 percent of all PAs are linked to neurofibromatosis 1 (NF1), a genetic condition that causes childhood brain tumors and is a primary focus of Gutmann's research. However, the ge...

2 brains -- 1 thought

...structure and function of a neuronal network. A common approach in scientific research is to investigate the structure of a system in order to then draw conclusions about its function. Memmesheimer and Timme now took the reverse perspective. "For some simple networks we know the activity dynamics, that i...

Out-of-body experiences may be caused by arousal system disturbances in brain

...een wakefulness and sleep. Sleep paralysis is a common form of REM intrusion, which can cause a condition of temporary paralysis along with visual or auditory hallucinations immediately after waking up or before falling asleep due to an ill-timed disconnection between the brain and the body. Although it ...

Study suggests some drug resistance to influenza B medications

Use of certain common antiviral drugs during a recent influenza B epidemic in Japan showed the development of viruses with partial resistance to the drugs, according to a study in the April 4 issue of JAMA. Two antiviral drugs, zanamivir and oseltamivir, which are a type...

Beyond the DNA: Chemical signatures reveal genetic switches in the genome

...ures that identify enhancers. The elucidation of a common histone modification signature will enable scientists to quickly identify enhancers and promoters for a gene, which will lead in turn to rapid identification of factors that control its expression." This method might also be used to identify the disr...

In obesity, brain becomes 'unaware' of fat

...rimates, whose digestive systems have much more in common with people. The findings do “strongly support the case?that leptin resistance in critical brain regions is a cause of obesity induced by diet, the researchers concluded. The results also “strongly validate?SOCS-3 as a target for antiobesity drug ...

Study finds antibiotic resistance in poultry even when antibiotics were not used

...have high levels of bacteria that are resistant to common antibiotics. Her findings, published in the March ...levels of drug resistant campylobacter bacteria, a common foodborne cause of diarrhea, cramping and abdominal pain. They found that even birds raised in th...

Major gene study uncovers secrets of leukemia

...atric acute lymphoblastic leukemia (ALL), the most common cancer in children. The discovery not only suggests novel methods for treating pediatric ALL, but also provides a roadmap for the identification of unsuspected mutations in adult cancers. ALL is a tumor in which immature white blood cells that no...

Penn researchers show how nanocylinders deliver medicine better than nanospheres

...rticles that contained one water-loving chain of a common polymer called polyethyleneglycol (PEG). PEGs are commonly found in everyday items like shampoo and some foods. Although synthetic, PEGs have already been approved as biocompatible to humans, making them ideal carriers, note the researchers. While...

Arsenic in chicken feed may pose health risks to humans, C&EN reports

...e American Chemical Society. Roxarsone, the most common arsenic-based additive used in chicken feed, is used to promote growth, kill parasites and improve pigmentation of chicken meat. In its original form, roxarsone is relatively benign. But under certain anaerobic conditions, within live chickens and on...

Scripps research study shows humans and plants share common regulatory pathway

...lants and mammals, very little is known about this common human-plant regulatory pathway. Ulevitch speculated that certain protein regulatory structures might exist in both plants and humans simply because they do the same thing in much the same way. "In reality," he said, "there are only so many ways t...

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