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Tag: "capable" at biology news

Bats prey on nocturnally migrating songbirds

...risk for passerines. A unique creature is indeed capable of exploiting the formidable food source represented by the billions of high-flying, Eurasian songbirds which engage twice a year into long-distance, north-south or south-north nocturnal movements. The danger seems especially acute where birds' fligh...

Some caterpillers just don't want to grow up

...ut multitude of alternative mechanisms principally capable to explain the evolution of delayed development," Dr. Thomas Hovestadt, the project leader from Würzburg University, points out. The scientists conclude that low added mortality and intense competition among caterpillars in the nest are a prerequ...

Can engineered immune cells stop AIDS?

...: developing an efficient transport system that is capable of delivering therapeutic payloads to specific cells. As challenging as the problem has been, researchers in the USC Viterbi School of Engineering may be turning a corner. With support from a $13.9 million grant from the Bill and Melinda Gates Fou...

Ultrasound upgrade produces images that work like 3-D movies

...would soon become obsolete, he added. New monitors capable of fusing stereo 3-D images without them are now in development....

Mitochondrial genes move to the nucleus -- but it's not for the sex

...g plants. "Plants that reproduce clonally or are capable of self-pollinating have transferred more genes from the mitochondrion to the nucleus," said graduate student Yaniv Brandvain, lead author of the paper. That discovery, Brandvain explained, is unexpected. The most obvious benefit of being part of...

Chimpanzees found to use tools to hunt mammalian prey

...t chimpanzees, at least under some conditions, are capable of habitually fashioning and using tools to hunt mammalian prey. The work, reported by Jill Pruetz of Iowa State University and Paco Bertolani of the University of Cambridge, will appear online in the journal Current Biology on February 22nd. Chimpa...

Engineering the heart piece by piece

... within a few days. Tests showed that the BEHM was capable of generating pulsating forces and reacting to stimulation more like real muscle than ever before. Previously, the group described the results of a self organization strategy, showing that it was possible to engineer heart muscle that closely res...

Satellites shed light on global warming

...ubtle ways in which these near-invisible waves are capable of affecting phytoplankton, as they may be providing them with an input of nutrient-rich water from the deep ocean as well as moving them around. These findings are then compared with the effect of waves in models, helping to make the models more rea...

Genomics throws species definition in question for microbes

...ecies classification framework in use today is not capable of fully portraying and organizing microbial diversity." The report contains an in-depth review of the myriad issues and conflicts involved in the classification of microbes in the post-genomic era, including a discussion on the definition of the...

Creating new life forms that may help eradicate cancer affecting women

...In effect, it becomes a cancer fighting "superbug" capable of treating breast cancer in patients whose tumors express the HER-X/Neu protein." Advaxis has already created several strains for potential use in future vaccines to treat other cancers. The company is also currently testing its cervical cancer vac...

New science of metagenomics 'will transform modern microbiology'

...om fragments of DNA that can be cloned into a form capable of being maintained in laboratory bacteria. These bacteria are used to create a "library" that includes the genomes of all the microbes found in a habitat, the natural environment of the organisms. Although the genomes are fragmented, new DNA seque...

Research project tackles 'regeneration' gap

...gh human organ systems such as the liver are quite capable of regeneration, the brain has only a small quantity of adult stems cells to fight disease or injuries. Similarly, the body has limited capacity to repair injured limbs or spinal cords. Regeneration researchers seek to strengthen the body’s inherent ...

White blood cells of cancer-resistant mice overwhelm natural defenses of cancer cells

...ancer-resistant mice renders the white blood cells capable of sensing unique diffusible and surface signals from cancer cells and responding to those signals by migration and physical contact," they said. The researchers said that in ordinary mice, the white blood cells are suppressed by self-defensive si...

How fish mend a broken heart

...ated regenerative spectrum, with many more tissues capable of impressive regeneration," they said. For instance, certain newts or salamanders can regenerate limbs, spinal cord, retina, brain, and heart tissue. While progenitor cell populations have been identified within most mammalian organs, including sk...

Cloned mice created from fully differentiated cells, a milestone in cloning research

...fficient for cloning, because granulocytes are not capable of dividing. In fact, we repeated our experiments six times just to be sure. Now we can say with near certainty that a fully differentiated cell such as a granulocyte retains the genetic capacity for becoming like a seed that can give rise to all cel...

Interaction between lymph and liver cells may affect immune response

... process. "The notion that naïve T lymphocytes are capable of directly interacting with hepatocytes contradicts the dogma that naïve T cells cannot gain access to peripheral non-lymphoid tissues," the authors state, adding that the study furthers the notion that liver cells may be involved in hepatic immune ...

Neuron cell stickiness may hold key to evolution of the human brain

...animals, could help explain why the human brain is capable of far more complex cognitive functions. In a paper published in the Nov 3, 2006 issue of the journal Science, a team of researchers led by Edward Rubin, MD, director of both JGI and Berkeley Lab's Genomics Division, report on a comparative genomics...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...iption bubble.?The enzyme polymerases involved are capable of moving both forward and backward on the DNA. Forward movement is favored by the binding of NTPs, while backtracking occurs especially when the enzyme encounters an impediment, such as damaged DNA. Kornberg’s group captured the first picture of t...

Uncovering DNA's 'sweet' secret

...uld not have produced a stable base-pairing system capable of carrying genetic information as efficiently as DNA. "The structure now provides insight of a chemical nature that (the six-carbon sugar) is just too 'bulky.' It has too many atoms," Egli said. The new insights provided by this structure lie at...

Fight weeds with plant pathogens

...se serious ecological problems. Invasive weeds are capable of altering ecosystem processes and displacing native plant and animal species. In addition, weeds serve as reservoirs for plant pathogens that impact crops. According to Rosskopf, there are two approaches used for managing weeds with plant pathog...

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