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Tag: "various" at biology news

Enhancing activity of marijuana-like chemicals in brain helps treat

...eitzer used genetically modified mice in which the various cell types were labeled with a fluorescent protei...her there were functional differences between the various cell types. Their study indicated that the two types of cells formed complementary circuits in the ...

Synthetic peptide targets latent papilloma virus infections

...he base of the skin that can turn into many of the various types of cells that make up the skin. As these cells divide and differentiate into skin cells, the viruses hitch a ride on the cells' chromosomes but do not become part of the chromosomes, as do other known pathogens, such as HIV in blood cells. Th...

A genetic 'gang of 4' drives spread of breast cancer

...ng." To test this idea, the researchers silenced various combinations of the four genes in human breast cancer cells that had metastasized to the lung, and then tested these cells in mice. To silence the four genes, the scientists used a technique called RNA interference, in which RNA molecules are tailore...

Antifungal drug kills TB bug

...e were able to show in laboratory experiments that various types of these azole drugs were also very good at killing the TB bacterium, and also that they bind very tightly to a number of the TB P450 enzymes that we have isolated ?inactivating their function." ...

Liver regeneration may be simpler than previously thought

... of mice. The first consisted of embryonic mice at various stages of development while the second was composed of adult mice to which two-thirds of their liver were removed. Using techniques such as DNA microarrays ?which determine which genes are active in a cells ?and software programs that analyze the col...

Technology reveals 'lock and key' proteins behind diseases

...ritis and schizophrenia are caused by mutations in various human membrane proteins." ...

Trusting your instincts leads you to the right answer

...get. The visual display screen was switched off at various time intervals either before or after the subjects' eyes landed on the target. When the on-screen image was hidden immediately after the subjects' eyes had landed on the target, the subjects often believed they were just guessing where the odd one ou...

Shedding new light on proteorhodopsin

...d cells under different concentrations of azide or various degrees of lighting, the Berkeley researchers were able to quantify the coupling between light-driven and respiratory proton currents. At the highest azide concentrations, the average cell velocity increased 70-percent upon green light illumination....

Iowa State University botanists identify new species of North American bamboo

... of the earth are only in those two areas now. For various reasons, the Eastern U.S. and East Asia are a repository for a lot of diversity," Clark said. "But we still don't understand exactly how long it has been since our bamboos separated from their Asiatic cousins. And we don't know how we ended up wi...

ESA launches new project to protect biodiversity

...areas in Latin America and the Caribbean, will use various DIVERSITY products and services to study the Galapagos and Cocos Islands in the Tropical Eastern Pacific Marine Corridor. "We have the responsibility to use these products correctly and to offer this valuable information to key organisations and d...

How badger culling creates conditions for spread of bovine TB

...in cattle. Indeed, it has become apparent that the various strategies may actually have been a contributory factor to the increase in disease through perturbation. The results presented in this paper lend weight to this argument." "The development of successful strategies for the control of TB in badgers ...

Scientists find method to pick noncompetitive animals, improve production

...ights the work with a photograph that Muir took of various colorful fish species interacting in a simulated e...evelop in the future between individuals and among various animal species. "This is important because the most stable ecosystems are those that have multipl...

Putting an old drug to a new use

...bad for our health. Our body stores excess iron in various tissues, where it can lead to organ failure and even death if not treated before irreversible damage has occurred. Researchers from the Innsbruck Medical University, the University of Heidelberg, Germany, and the European Molecular Biology Laboratory...

New cell type identified in cancer development

... like normal stem cells, had the ability to create various types of benign cells in mice with healthy or recovering immune systems. These daughter cells, however, were likely to die, especially when they encountered signals to further differentiate ?a strong contrast to the behavior of normal stem cells. ...

20-year study shows significant rise in childhood obesity, especially among girls

... USA. "As societies become more technological, various aspects of everyday life demand less and less physical activity and this is bound to contribute to childhood obesity. "And as overweight and obese children become overweight and obese adults they run a much higher risk of developing cardiovascular...

Instruction manual for creating a molecular nose

... The senses of living organisms function using various mechanisms, among other things utilizing membrane proteins as receptors. Researchers at the Max Planck Institute for Polymer Research and the Max Planck Institute of Biochemistry have now succeeded in creating biosensors by incorporating such protein...

Exploring the molecular origin of blood clot flexibility

...more or less stiff," explains Weisel. For example, various peptides or proteins, such as antibodies, bind specifically to fibrin, affecting clot structure. The idea would be to use such compounds in people to alter the properties of the clot, so it can be less obstructive and more easily dissolved. In the...

Carnegie Mellon University research shows how sensory-deprived brain compensates

... study, Barth recorded brain activity in mice with various degrees of whisker removal. As a first step in her research, Barth removed all but one whisker and recorded neural activity in a brain region located on the opposite side of the animal. (Flicking a whisker on one side of a mouse stimulates a part of ...

No carrier necessary: This drug delivers itself

...se I/II human clinical trials at RPCI for treating various types of cancer. The UB researchers found that the nanocrystals of HPPH were taken up by tumors in vivo, with efficacy comparable to conventional, surfactant-based delivery systems. A patent has been filed on this work. “In this case, the drug ...

Researchers find 6,000-year-old fossil evidence

...eamed with a group of scientists doing research in various locations in Central and South America; the project was led by Linda Perry, a research associate at the Smithsonian National Museum of Nature History's Archaeobiology Program. Perry discovered an unknown microfossil starch grain while doing research ...

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