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Tag: "facilitates" at biology news

In the sea slug's defense against lobsters, confusion is key

...vioral control system and a confused response that facilitates the slug's ultimate escape. The team of researchers conducting the study, Cynthia Kicklighter, Zeni Shabani, and Paul Johnson, led by Charles Derby of Georgia State University, discovered that in addition to containing unpalatable, aversive chemical...

Critical role in programmed cell death identified

...xplained, with a well documented cell lineage that facilitates genetic manipulation. Their cell death machinery is simple, with one component for each of the different factors involved in the central cell killing apparatus. Mammals on the other hand have multiple components or families of proteins for these fact...

Stopping smallpox in its tracks: A new anti-viral approach

...h normally initiates an intracellular cascade that facilitates viral replication. This study shows that drugs that interfere with erbB-1 signaling inhibit SPGF-induced viral replication and spread. The authors show that treatment with these erbB-1 inhibitors are effective in lowering morbidity and mortality, and...

Key mechanism in genetic inheritance during cell division identified

...r. "Although the presence of microtubules strongly facilitates the oligomerization process, ring assembly seems to be an intrinsic property of the Dam1 complex, as we have been able to induce self-assembly into rings in the absence of microtubules." The formation of rings around the microtubules by the purified...

Study reveals new technique for fingerprinting environmental samples

...ent metabolic pictures, this research, Rubin said, facilitates a holistic perspective on environmental systems, something that many scientists will welcome. "Environmental systems are extremely complex, harboring numerous diverse species coexisting in a single locale," said Rubin. "By focusing on the informatio...

Random gene expression may drive HIV into hiding

...IV's replication machinery: a gene called Tat. Tat facilitates transcription of HIV's entire genome, including itself, which creates a positive-feedback loop: If a little bit of Tat is around, then the HIV genome is transcribed efficiently, which makes more Tat, and so on. If a cell has no Tat, then the HIV geno...

Rodent social behavior encoded in junk DNA

...so release of vasopressin during social encounters facilitates social behavior. If such familial traits are adaptive in a given environment, they are passed along to future generations through natural selection. Variability in vasopressin receptor microsatellite length could help account for differences in norm...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...ocation of administered stem cells is such that it facilitates the delivery of renoprotective growth factors and cytokines to the sites where kidney cells are primarily destroyed from both the blood and urinary aspects of the cells that must be protected and repaired!" Westenfelder reported. With their rapid mo...

Results of world's first gene therapy trial for arthritis show approach safe, feasible

...ars to have a good safety profile and, in animals, facilitates more extended gene expression. The investigators hope to conduct additional clinical trials in both osteoarthritis and rheumatoid arthritis using AAV to transport the gene. In addition to Drs. Evans and Robbins, other authors are James H. Herndon, M...

Penguins okay with human visitors?for now

...th. When stressed, the increase in their hormones facilitates their ability to escape or outlast the situation. As stated, the results show no short-term negative impact of human visits, but long-term effects have not been reported. "These long-term consequences are much harder to document, especially in lon...

Queensland scientists identify molecule that links both sides of the brain

...d. "We have shown that the Ryk receptor molecule facilitates the targeting of individual nerve fibres. "This process is critical for the transmission of sensory information effectively throughout the adult brain." These findings are expected to have long-term implications for development of treatments for ...

Rehydrate -- your RNA needs it

...ere, even at quite a distance," Walter said. Water facilitates the process by increasing the number of hydrogen bonds and making the ribozyme behave as an interconnected whole. Walter and coworkers also found evidence that water is directly involved in catalyzing reactions in the ribozyme's core, another prev...

A new look at the state of the oceans

... if necessary, evaluated by experts. This not only facilitates the fast development and expansion of the data base, but also leads to a high diversity of data entries with varied geographic origin through contributions from across the globe. This large geographic scope is of great importance for plankton researc...

HIV-1's high virulence might be an accident of evolution

...ole may be less black and white. "SIV Nef not only facilitates SIV persistence but may act as a 'rheostat,' allowing high enough levels of T cell activation to ensure sufficient viral replication and transmission, while at the same time preventing escalation of immune activation to levels that may be harmful to ...

Gene therapy injected into the brains' of mice with Huntington's disease

...armless viral coating, which protects the gene and facilitates its delivery to brain cells. The virus coating (AAV vector) that carries the gene is well studied and has been used in several other gene transfer studies to deliver different genes for Parkinson's disease and Alzheimer's disease patients. The vector...

Scientists discover new regulating mechanism in cells

...rocessing step also adds a signal to the mRNA that facilitates the final making of the protein. Because mRNAs like those for junD and the retrovirus are not processed, and therefore lack that signal, scientists have not understood how these mRNAs are translated into protein. Boris-Lawrie's findings help solv...

P(acman) takes a bite out of deciphering Drosophila DNA

...ue called “recombineering?into the strategy, which facilitates the scientist to clone large chunks of DNA and subsequently allows them to make specific mutations anywhere he or she wants in the gene. The third technique allows the researcher to pinpoint where he or she wants to the mutant gene to go in the g...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...e findings indicate that the observation of others facilitates the motor system. The authors point out that the findings also suggest that the neural mechanisms that underlie action observation are intrinsically "social"--that the neural mechanisms map the actions of others onto one's own body, rather than initi...

Researchers in Montréal and the US create model of key immune-system component

...biology approach, they have developed a model that facilitates the study of the function of the phagosome. The phagosome is the organelle responsible for the destruction of infectious pathogens that cause such diseases as tuberculosis and salmonellosis, as well as pathogens that could be used in bioterrorism. Th...

Pheromone from mother's milk may rapidly promote learning in newborn mammals

...n mother's milk may act as a chemical booster that facilitates the ability of pups to quickly associate environmental odors with the opportunity to nurse. The findings, which deepen our understanding of pheromone function and how learning occurs in the earliest days of life, are reported in the October 10th is...

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