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Tag: "kinds" at biology news

Powerful technique for multiplying adult stem cells may aid therapies

...pecific, each one destined to develop into several kinds of cells. Chengcheng Zhang, a postdoctoral researcher in the Lodish lab, was determined to develop a way to multiply adult stem cells once they've been isolated from tissue. Achieving this goal required some intricate laboratory sleuthing. Zhang ...

University of Utah to help build bionic arm

...lop the prosthetic arm itself and will study other kinds of neural interfaces that could operate the bionic arm, including a device implanted to receive signals from the brain instead of nerves in the residual limb. After two years, project leaders at the Applied Physics Laboratory will decide which appr...

Both alcoholism and chronic smoking can damage the brain's prefrontal cortex

...lop the prosthetic arm itself and will study other kinds of neural interfaces that could operate the bionic arm, including a device implanted to receive signals from the brain instead of nerves in the residual limb. After two years, project leaders at the Applied Physics Laboratory will decide which appr...

Newly discovered protein kills anthrax bacteria by exploding their cell walls

...enefit over antibiotics, which kill many different kinds of bacteria, including many helpful species. Because it is so specific, the chances of anthrax becoming resistant to PlyPH, as it is to many of the antibiotics currently available to treat it, are extremely low. "We have never seen bacterial resista...

Stanford study of owls finds link in brain between sight and sound

...ds coming from other locations. Selecting certain kinds of information to be processed, while ignoring others, is the root of attention. What was previously known about the mechanism of attention was based on research done by other scientists - including assistant professor of neurobiology Tirin Moore, Ph...

Amazon rainforest greens up in the dry season

...he edge of the rainforest to see whether different kinds of disturbance cause different growth patterns." ...

Engineered mouse mimics cognitive aspects of schizophrenia

..., or anxiety. However, the mice did show the same kinds of specific cognitive deficits seen in human schizophrenics. In tests using mazes, the animals showed deficits in "working memory"--the temporary storage of information required for a task. The animals also showed poorer behavioral flexibility; they ...

How 'hot' emotional brain interferes with 'cool' processing

...rse that with drug treatment, so we're using these kinds of studies to determine whether particular antidepressants influence the response of that ventral system. And what is particularly exciting is that this method allows us to look directly at the neurological target of the drug and not have to try to m...

Less is more, gene study shows

...ted to know how many genes have been lost and what kinds of genes have been lost in human evolution, and second, whether any of those gene losses was a good thing." Zhang's group started by scrutinizing a database of human pseudogenes---stretches of DNA that look like known genes but don't function as gen...

Watching the brain switch off 'self'

...same musical phrases, but to perform two different kinds of processing on them. To explore sensory processing, the researchers asked the subjects to use buttons to classify the images as animal/non-animal, or the musical passages as trumpet/non-trumpet. And to study introspection, the researchers asked the...

Cloned stem cells prove identical to fertilized stem cells

...ch genes were active and which were silent in both kinds of cells. To ensure the accuracy of his results, h...y no significant molecular difference between both kinds of stem cells." "In my opinion, these results solidify the argument that while a cloned animal is ...

Salmonella caught red-handed

...eed to have antibiotics available that work in new kinds of ways. The last few years of research have, however, found few such ways. One major difficulty for developers of antibiotics is choosing the proper point of attack against bacteria. There are hundreds of possible points of attack, according to geno...

World shark attacks dipped in 2005, part of long-term trend

...ing, scuba diving, skin diving and engaging in all kinds of activities." Of this year's four fatalities, two were in Australia, one in the Indo-Pacific island of Vanuatu and one in the United States. The U.S. attack occurred June 25 along Florida's Gulf Coast, when 14-year-old Jamie Daigle was attacked b...

Molecule does more than slice and dice RNA

...lls down developmental pathways to become specific kinds of cells or tissues. It may also play roles in mai...unction may have been to defend cells from certain kinds of viruses. Having an image of Dicer from Giardia intestinalis, Doudna noted, will help scientists ...

Advanced genomics and proteomics improve the diagnosis and treatment of a deadly lung disease

...lls down developmental pathways to become specific kinds of cells or tissues. It may also play roles in mai...unction may have been to defend cells from certain kinds of viruses. Having an image of Dicer from Giardia intestinalis, Doudna noted, will help scientists ...

Two NIH initiatives launch intensive efforts to find roots of common diseases

...treatment," Secretary Leavitt said. "These are the kinds of innovative efforts that we should support. We m...any that develops the types of tools used in these kinds of genetic studies, will contribute enough laboratory resources to study two additional common disea...

Sociality of sweat bees evolved simultaneously during climate change

...ees, ants, termites, many wasps as well as certain kinds of shrimp and the naked mole rat. Danforth's study, to be published in a forthcoming issue of the Proceedings of the Royal Society of London, Series B, Biological Sciences, used both fossils as well as more than 2,300 base pairs of DNA sequences fr...

A new way of looking at molecular motors

... of treatments for conditions ranging from certain kinds of blindness and kidney disease to neurodegenerative disorders and parasitic diseases such as malaria. All complex organisms use myosin and its relatives, kinesin and dynein, to move substances around inside cells and to help cells move from one pl...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...heir better rested counterparts "implies that some kinds of cognitive function are resistant to sleep loss," Hairston said. "This may be significant in human learning as well, and implies that it may be possible to optimize the way information is presented to rested versus fatigued individuals to take adva...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...of the Atlantic Ocean." Among the species are 652 kinds of fish, 184 species of birds, and 32 species of mammals. Microscopic plants, including the algaes, alone account for an impressive 733 different species, or more than one of every five species in the Gulf of Maine region. "This register is the firs...

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