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Tag: "such" at biology news

Female-led infanticide in wild chimpanzees

...the absence of significant additional evidence for such behavior among female chimpanzees, speculation had...oint out that these new observations indicate that such female-led infanticides are neither the result of isolated, pathological behaviors nor the by-produc...

Thymus transplants gives hope to babies with fatal immune disease

...une system. Dave'yana was the 31st baby to receive such a transplant at Duke to correct immune system deficiencies caused by a condition called DiGeorge anomaly. Duke is the only center in the world that performs the procedure. The latest results of Duke's experience with this treatment of DiGeorge ano...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...construct the hearing abilities of extinct animals such as dinosaurs and early mammals. According to the ...uscle noise can be measured using various sensors, such as microphones and even skin-mounted accelerometers. Scientists at the Scripps Institute of Oceanog...

Researchers develop way to calculate speed of bacterial sex

...teria can lead to positive environmental outcomes, such as improved bioremediation qualities, bacterial ad...ncorporated the experiences of bacteria in nature, such as wait times associated with conjugations, bacterial cell motion and transport in ground water, and...

Chemical maps hint at drug's effects on schizophrenia

...octors draw blood every day to look at metabolites such glucose and cholesterol and determine whether some... investigate whether lipids, small fatty molecules such as cholesterol and triglycerides, also may play a role in the disease and in response to therapy. ...

Spreading viruses as we breathe

...us was able to travel from building to building in such a short time," she said. Professor Morawska said her research had shown that one person infected with the disease could easily spread the virus by simply breathing. "Understanding the way viruses spread from human expiration means we can look ...

Research says boiling broccoli ruins its anti-cancer properties

... anticancer properties of many Brassica vegetables such as broccoli, Brussel sprouts, cauliflower and gree...age of fresh vegetables at much lower temperatures such as ?5 °C (much higher than for storage in a refrigerator at 4? °C) may cause significant loss of glu...

Herpes infection may be symbiotic, help beat back some bacteria

...e infection, many of these viruses cause symptoms, such as fever, cold sores or blisters. They then enter ...inds of questions we're accustomed to asking about such infections, but our findings suggest that we need to start." Virgin notes that human and mouse he...

New study examines 'brain's own marijuana'

...not be used to treat stress-related mood disorders such as anxiety. An alternative strategy may be to dire...get the ‘brain’s own marijuana.’? The success of such a strategy requires a better understanding of how endocannabinoid moderates stress-related behaviors...

Effect on breast tumors of DNA alternations in 3 genes described

...her clinicopathological features of breast cancer, such as tumor size, histological grade or nuclear grade. "Our data suggested that promoter hypermethylation is common in breast cancer," Tao added. "Because promoter hypermethylation is potentially reversible, identifying cancers with different hyperm...

The quest for an effective HIV vaccine presents new possibilities, challenges

...the establishment of HIV infection. Although rare, such antibodies do exist, giving hope to scientists that a vaccine to induce such antibodies can be designed. Drs. Johnston and Fauci conclude that a vaccine that prevents HIV in...

First demonstration of new hair follicle generation in an animal model

...idence for the first time that, like other animals such as newts and salamanders, mammals have the power t...nd includes all the normal structures of the skin, such as hair follicles and oil glands, rather than just a scar,?explains Cotsarelis. By introducing mo...

Decoding protein structures helps illuminate cause of diabetes

...s Zanni. Without their automated method, he says, such experiments would be nearly impossible. The tec...r human diseases that involve protein mis-folding, such as Alzheimer's and Huntington's diseases. At this time, however, he says the automation of the ...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...rotrophic factors (those that favour cell growth), such as GDNF, also causes a significant increase in dopaminergic neurones in this region of the brain indicates that the beneficial effect produced by the implant of cellular aggregates is probably due to the action of the GNDF neurotrophic factor contain...

Scientists seek useful traits in wild cottons

...eening obsolete and wild cottons for useful traits such as insect and disease resistance, and drought, salt and cold tolerance. Scientists at Lubbock obtain seed from global cotton collections in small lots, sometimes as few as 10 seeds per lot. Before their work advances, they must turn a few se...

Do fruit flies have free will?

...team of researchers showed for the first time that such variability cannot be due to simple random events ...mised spontaneous behavioral variability in humans such as depression, schizophrenia or obsessive compulsive disorder. The research will appear in the Ma...

Genome of yellow fever/dengue fever mosquito sequenced

... Control might take the form of a genetic control, such as using TEs to carry a gene into the genome that would make the mosquito resistant to the virus and stop its role as a vector for disease. Although that scenario is challenging, the payoff is potentially great, Tu said. "By introducing TEs in a ...

Latent memory of cells comes to life

... apparently very little in common with each other, such as skin, brain, or bones. Mechanisms at the origin of this so-called cellular differentiation are those for which researchers at the University of Copenhagen have a possible clarification. ”The explanation for the sudden changes is that it is not ...

Peanut allergies overstated, study finds

...bility." Reasons for this may include variables such as the equipment used and the pressure administered by the practitioner during a skin prick test. "There is a population of children who have never eaten peanuts ?or worse, those that eat them everyday, then have a positive peanut skin test and ar...

DNA analysis suggests under-reported kills of threatened whales

..." if officially reported. Economic incentives make such pursuits attractive, said Baker, who pointed out that individual whales are thought to fetch as much as $100,000. "The obvious question becomes how much of the mortality is caused by incidental bycatch, and how much of it is actually intentional,"...

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