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Tag: "question" at biology news

Viral DNA sequence a possible trigger for breast cancer

...ed trigger for breast cancer. The DNA sequence in question is usually found in immune cells and helps trigger the activation and proliferation of the cells. These sequences have also been found in proteins from some other cancer-causing viruses such as Epstein Barr virus and Kaposi's sarcoma virus, but what ...

Growth in the sea comes down to a struggle for iron

...on fertilization tests conducted to that date. The question that remains unanswered is why the diatoms showed signs of nutrient stress before the iron and other nutrients were used up. Wells and his colleagues think they may know. For clues, they have looked to a discipline that is far removed from the sea. ...

Anti-bacterial additive widespread in U.S. waterways

...umanhealth risks? This is a scientifically complex question consumers,knowingly or unknowingly, answer to everyday in the checkout line ofthe grocery store," said Dr. Halden....

Another Look Finds Promising Proteomics Test is Not Biologically Plausible

...ion of samples, Baggerly says. The study raises a question that is broader than the effectiveness of the experimental ovarian cancer test, the researchers say. “Are we going to be able to measure what we want to measure??Baggerly asks. “Given issues in technology and a lack of standards, I think it will be a...

New species from old data

...ion of samples, Baggerly says. The study raises a question that is broader than the effectiveness of the experimental ovarian cancer test, the researchers say. “Are we going to be able to measure what we want to measure??Baggerly asks. “Given issues in technology and a lack of standards, I think it will be a...

Cracking the olfactory code in bees

...ion of samples, Baggerly says. The study raises a question that is broader than the effectiveness of the experimental ovarian cancer test, the researchers say. “Are we going to be able to measure what we want to measure??Baggerly asks. “Given issues in technology and a lack of standards, I think it will be a...

Signaling protein builds bigger, better bones in mice

...ion of samples, Baggerly says. The study raises a question that is broader than the effectiveness of the experimental ovarian cancer test, the researchers say. “Are we going to be able to measure what we want to measure??Baggerly asks. “Given issues in technology and a lack of standards, I think it will be a...

Bound for destruction: Ubiquitination protects against improper Notch signaling

.... What haslong remained a mystery, however, is the question of how Notchreceptors that have not been activated by a ligand are protected fromdigestion by that protease. Now, in a report published in the December29 issue of Current Biology, Shigeo Hayashi (Group Director, Laboratoryfor Morphogenetic Signaling)...

U-M scientist to talk about tissue engineering at AAAS

...ing for the damage of radiation. "It's not just a question of whether we can make new tissue in a perfect condition. Now we're mimicking what can really happen in a person, and we don't know if the rules of regeneration might be totally different," said Paul Krebsbach, associate professor at the U-M School o...

An HIV Protein Plays a Surprising Role in Gene Activation

...ther Tat could play a similar role. To study this question in living human cells, Green and colleagues turned to chromatin immunoprecipitation, a technique that detects proteins bound (directly or indirectly) to DNA. Working with three well-known effectors of transcription—an activator (Gal4-VP16), a transcr...

Scientists discover the cellular roots of graying hair

... normal hair folliclecycling,?adds Fisher. “So the question is: what in the hair follicleis signaling the stem cells that is absent when aging occurs and thestem cells die off? Now we have a much more refined way of dissectingthat signaling pathway in melanoma. Eventually we hope to tap into thisdeath pathway...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

... normal hair folliclecycling,?adds Fisher. “So the question is: what in the hair follicleis signaling the stem cells that is absent when aging occurs and thestem cells die off? Now we have a much more refined way of dissectingthat signaling pathway in melanoma. Eventually we hope to tap into thisdeath pathway...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

... normal hair folliclecycling,?adds Fisher. “So the question is: what in the hair follicleis signaling the stem cells that is absent when aging occurs and thestem cells die off? Now we have a much more refined way of dissectingthat signaling pathway in melanoma. Eventually we hope to tap into thisdeath pathway...

New research questions basic tenet of neuron function

...with activity-dependent release. "These findings question one of the core tenets of synaptic function and reveal significant complexity in organization of synaptic vesicles within individual synapses," said Dr. Ege Kavalali, assistant professor in the Center for Basic Neuroscience and of physiology at UT So...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...e actually spared by the treatment. “The simplest question we're asking is, ‘Does any particular combination of proteins prevent or accelerate degeneration of the neurons?'?said Nicholas Muzyczka, Ph.D., an eminent scholar and professor of molecular genetics and microbiology at UF's College of Medicine who p...

NJIT Presidential Award winner takes stem cell research another step

...have impaired bone healing," Arinzeh said. "So the question is how to treat patients suffering from bone fractures and other defects that may not heal because they are also suffering from other disorders. We are looking at the current treatment for repairing bone defects, which is the use of allograft tissue,...

Falling ants glide back to trunk to avoid dangers of forest floor

...he said, though more studies are needed before the question can be answered. Yanoviak noted that worker ants are secondarily wingless, meaning they probably evolved the ability to glide after they lost their permanent wings, which were common in primitive ants. "This discovery doesn't necessarily say someth...

Love at first smell

...Max-Plank Society said: "The new results raise the question of whether humans can also gather information about MHC on the basis of peptides." ...

Family trees of ancient bacteria reveal evolutionary moves

... sulfur and a major shift in carbon cycling. "The question is: Why?" said Blank. "My contribution is the attempt to find evolutionary explanations for these major changes. There were lots of evolutionary movements in Cyanobacteria at this time, and the bacteria were making an impact on the Earth's developmen...

Gene therapy for Parkinson's disease moves forward in animals

...e actually spared by the treatment. "The simplest question we're asking is, 'Does any particular combination of proteins prevent or accelerate degeneration of the neurons?'" said Nicholas Muzyczka, Ph.D., an eminent scholar and professor of molecular genetics and microbiology at UF's College of Medicine who ...

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