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Tag: "say" at biology news

New genetic test can detect clam disease

... along the East Coast and no cure, the researchers say the best solution for shellfishermen and aquaculture operations is to keep infection levels as low as possible and try to keep seed clams free of the disease. One possible remedy may be rotating shellfish crops, much like farmers do on land. ...

Wright bros. upstaged! Dinos invented biplanes

... of the much earlier evolution of dinosaur flight, say two dino flight experts. According to paleontologist Sankar Chatterjee and retired aeronautical engineer R.J. Templin, a small early Chinese dinosaur called Microraptor gui used a two-level, biplane wing configuration to fly from tree to tree in th...

A little telomerase isn't enough

...t younger ages than their parents or grandparents, say the researchers. In the Proceedings of the National Academy of Sciences in October 2005, Greider and her team reported their study of one family with dyskeratosis congenita. Mary Armanios, M.D., now an assistant professor of oncology in the Johns Ho...

War on terror meets war on cancer

...volve fast-growing cells. Hegg and Kreuzer-Martin say the new findings might make it more complicated to determine where bacteria used in bioterrorism were grown. That isn't true of anthrax, which is spread by spores that are almost dormant. But for live bioweapons spread through the air in an aerosol m...

Molecular cabal contributes to stroke damage

... 23, 2005, issue of Neuron, Jun Gao and colleagues say that their findings could contribute to the development of drugs to protect against the molecular "cabal" that produces such lethality. In their experiments, the researchers discovered the molecular mechanism linking two key components of neuronal d...

Male elephants woo females with precise chemistry

...sity and the University of Auckland in New Zealand say the release of a specific proportion of two mirror images of the pheromone, frontalin, depends on whether the male elephant is mature enough and has reached a particular stage of musth, an annual period of sexual activity and increased aggression. ...

Magnetic probe successfully tracks implanted cells in cancer patients

...recurrence or stem cells to repair damaged organs, say the researchers. Bulte and a team of Dutch researchers used MRI and a magnetic probe approved by both European and U.S. agencies to locate therapeutic cells injected into eight melanoma patients. "Our results show that the MRI-based technique was...

Science's Breakthrough of the Year: Watching evolution in action

...Earth get its building blocks? Some scientists now say early Earth materials come from a different part of the solar system, while others say parts of early Earth are just sunk deep in the planet, hidden from view. Key Protein's Close-up: Th...

New possibilities for flu antiviral and vaccine research emerge from 'Spanish flu' virus

...viruses than other human flu viruses. Many experts say that it is only a matter of time before an avian flu outbreak occurs in humans and develops into a global pandemic, potentially costing millions of lives. Therapies against a new flu strain would need to disarm the parts of the virus that do the mos...

New technique multiplies life span in simple organisms

...ning flat out. The organisms in Longo's experiment say otherwise. "In our paper, we show that age-dependent mutations increase at a much slower pace in organisms lacking RAS2 or SCH9 and at a remarkably low pace in organisms lacking both SCH9 and SIR2, raising the possibility that the mutations that cau...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

... South Asian communities, global fisheries experts say habitat restoration, retraining and education programs are much needed to revive severely exhausted fisheries and steer survivors into more sustainable livelihoods than fishing. According to new analyses by the Malaysia-based WorldFish Centre (see ?...

Sperm stem cells closer to being like embryonic stem cells

...n sperm is not one of their goals, the researchers say it may be possible someday to correct genetic defects in humans ?cystic fibrosis, for example ?by identifying and eliminating in culture a man's sperm stem cells that carry the gene. Dr. Garbers said that a renewable source of cultured sperm stem c...

A New Era of Hope for the World's Most Neglected Diseases

...ve developing countries?(Science 309: 401?04), and say they are now reaping the benefits of decades of investment in education, health research infrastructure, and manufacturing capacity. These countries can begin controlling their endemic tropical diseases themselves by developing their own treatments a...

Compound from marine bacteria shows potential as multiple myeloma therapy

... moved into Phase I clinical trials in early 2006, say officials of Nereus Pharmaceuticals in San Diego, ...er range of proteasome activities than bortezomib, say the researchers, and works at lower doses. NPI-0052 also appears to be less toxic to normal cells. ...

'Perception' gene tracked humanity's evolution, scientists say

...rence coincides with the evolution of our species, say scientists at Indiana University Bloomington and three other academic institutions. Their report appears in the December issue of Public Library of Science Biology. The gene encodes prodynorphin, an opium-like protein implicated in the anticipation...

Looking for the genes that affect a person's level of response to alcohol

...medical functioning. While some individuals might say 'I'm not an alcoholic' or 'I'm not one of those do...this design is that researchers used what we would say are two separate phenotypes," said Hesselbrock. "One is the person's subjective opinion of feeling ...

Olfactory system detects pheromones that control reproduction

... For example, textbooks on reproductive physiology say that pheromonal modulation of reproductive behavior depends on these connections," said Dulac. "However, our studies show that this idea is wrong." Previous experiments designed to tease out the routes of neurons used techniques that depended heavil...

The bioweapon is in the post

... routinely perform sequence checks, some companies say that they do investigate their customers. But the ...sidering the issue. Some gene synthesis companies say they would welcome more detailed rules. John Mulligan, president of Blue Heron, says it would be hel...

How E. coli bacterium generates simplicity from complexity

...the genome," said Palsson. "On a high level we can say that E. coli is obsessed with how it breathes and whether or not glucose is available to eat. All of its genetic complexity basically enables it to generate a nice steady state for itself regardless of what it has to live on." Higher organisms have ...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...cer Center researcher. Mischel and his colleagues say in an article in the Nov. 10 issue of the New England Journal of Medicine that the discovery could change the way doctors treat glioblastomas, the most common type of malignant brain tumor and one of the those lethal forms of cancer. "In a biologica...

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