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Tag: "lost" at biology news

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

...s in the case of the Alaskan stickleback fish that lost its armor and evolved from an ocean-loving species to a variety of landlocked lake dwellers. Beyond the genome, researchers watched evolution in action among a number of animals, from caterpillars to crickets, and found that behavioral differences s...

Researchers know what you were about to say; fMRI used to detect memory storage and retrieval

...rustration. "An every-day strategy for getting at lost memories involves using a part of a memory to pull out the entire thought, much like when you try remember where you put your keys last night," Polyn said. "If you recall that you were washing dishes, that might trigger associated memories, leading ...

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

...d by easy and ill-considered options for replacing lost boats and gear. "It would be a dangerous over-simplification, for example, to argue that with the death of such a high proportion of fishers, providing boats and gear to those that remain presents no risk to the sustainability of stocks or to the lo...

Novel protein complex enables survival in hostile environment

...either the ancient sulfite detoxification has been lost or it is not recognizable because it is unlike any known system," Mukhopadhyay said. The challenge of the latter possibility attracted the group to the topic. They decided to see if methanogens that live in an environment where the early earth cond...

Missing fossil link 'Dallasaurus' found

... sea. The importance of Turner's discovery isn't lost on the researchers putting together the pieces of the mosasaur puzzle. In fact, they predict the legacy of Turner's discovery will live on. His contribution was honored by naming the species, "turneri," after his last name. "Not all major discoveries...

Neurons generated in the adult brain learn to respond to novel stimuli

...he brain, perhaps allowing them to replace neurons lost to injury or disease. The report from researchers at the Massachusetts General Hospital (MGH)-Harvard Medical School (HMS) Center for Nervous System Repair (CNSR) appears in the Nov. 16 Journal of Neuroscience. "Our results show that these new neu...

Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

...s "working memory." They also found that honeybees lost their working memory of a re-enforced odor if they were cooled down and then revived, suggesting that the memory wasn't permanently stored. This latest study is the first to combine fluorescent dye imaging developed by Galizia, and advanced image ...

Wild Gorillas Handy with a Stick

...udy—prompted scientists to speculate that gorillas lost the skill because they didn't need it. The largest of the great apes, gorillas can gnash nuts between their teeth and simply smash termite mounds to release their denizens. But now, as part of an ongoing study of western gorillas in Nouabalé-Ndoki N...

'Sharp' older brains are not the same as younger brains

...ats with compromised cognition had brains that had lost the ability to adjust the force of those synaptic communications, the older rats whose memories remained sharp still had that capacity. Interestingly enough, the successful older rats also relied far less than did younger rats on a synaptic receptor ...

Overfishing may drive endangered seabird to rely upon lower quality food

...d September. Brown-tipped breast feathers are only lost in the pre-breeding period, while all-white breast feathers and wing feathers are lost in the post-breeding period. The researchers were thus able to relate the diet of the murrelet to t...

Cancer support cells may evolve, fuel tumor growth, study shows

...the researchers showed that fibroblasts eventually lost p53 function. This resulted in cells continuing to divide and proliferate, thereby fueling the cancer's growth. "This occurred in 100 percent of the animals studied. It's a strong selective pressure," Van Dyke said. "Now the whole organ is evolving a...

Genes involved in biofilms

...ual methods, involved identifying mutants that had lost the capacity to form biofilm, thus enabling identification of the essential genes and positive regulators of the process. The results showed that a positive regulator known as Pnp (Polynucleotide phosphorylase) exists and which regulates the accumula...

OHSU discovery sheds light into how stem cells become brain cells

...ns or diseases that might be combated by replacing lost or damaged brain cells. The research is published ...nerate neurons that could be used to replace cells lost in a variety of diseases and conditions that affect the brain and spinal cord. That is our next ste...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...an asthma and is estimated to result in 51 million lost school hours. In an effort to understand how best to combat the tooth-decaying properties of S. mutans, Brady and her team set out to learn how the organism was able to survive its own acid. To find out, the researchers tinkered with systematically ...

Anyway you slice it, tomatoes cut through drought with new gene

...r cultivation and to regain the use of arable land lost to scarce water supplies." Hirschi and Gaxiola worked with Dr. Sunghun Park, also of the Vegetable and Fruit Improvement Center. "Our center is good at moving genes into the different plants," Hirschisaid. "Dr. Park's job was to move this ge...

How the neuron sprouts its branches

...ell as aid efforts to restore neuronal connections lost to injury, stroke or neurodegenerative disease, said the researchers. In a paper published in the Dec. 8, 2005, issue of Neuron, Howard Hughes Medical Institute investigator Michael Ehlers and his colleagues reported that structures called "Golgi ou...

Genetic key to growth of new arteries is identified

...2 gene did not grow new arteries. About 40 percent lost a portion of a leg due to gangrene caused by inadequate blood flow, demonstrating that the MMP2 gene is "very important" in an animal's ability to grow new arteries in response to a blockage, says Sarkar. The second part of the study looked at preci...

Common molecular 'signature' identified in solid tumors

... as treatments. "If we can replace miRNAs that are lost and block those that are overly abundant, then maybe we can prevent some of the very earliest changes that happen in the development of cancer. There is a lot of work that still needs to be done, but I am convinced that this field will give us more p...

Living taste cells produced outside the body

...his technique may provide hope for people who have lost their sense of taste due to radiation therapy or t...t avenue for research aims to help people who have lost their sense of taste from radiation or diseases. Identification of factors that promote taste cell r...

Minimal genome should be twice the size, study shows

...coli, the Buchnera and Wigglesworthia genomes have lost some of the genes that they would otherwise need f... cosy conditions, Buchnera and Wigglesworthia have lost some of the genes they would otherwise need to produce some of the basic molecules they need to surv...

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