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Tag: "change" at biology news

Bone marrow stem cells may heal hearts even years after heart attacks

...oving fast, and he expects that ultimately it will change heart attack treatment. Reida El Oakley, F.R.C.S., M.D., from King Fahd Medical City in Riyadh, Saudi Arabia and the National University of Singapore, who also was not connected with this study, said that in addition to confirming the safety of this...

Modifications render carbon nanotubes nontoxic

...f the study. "In both cases, it's the same answer: change the surfaces. This is an important demonstration that there are general trends in biological responses to nanoparticles." Co-authors on the paper include graduate students Christie Sayes, Feng Liang, Jared Hudson, Jonathan Beach and Condell Doyle; u...

Scientists closer to new cancer detection method

...ide a few drops of body fluid or blood and a color change would be an indication of the existence of a cancer biomarker in the body. In that event, the person could seek a more thorough examination." ...

New study to explore cellular circuitry

...ire cells that have undergone an unhealthy genetic change (mutation) and allow those cells to survive. Learning the identity of the proteins that can re-wire particular mutant cells will also help researchers complete the wiring diagram. "A completed yeast cell diagram would help us build one for humans...

Climate change will affect carbon sequestration in oceans, model shows

...ion to store carbon dioxide in the deep ocean will change with climate change. The direct injection of carb...nteractive mechanisms, the ocean circulation could change and affect the retention time of carbon dioxide injected into the deep ocean, thereby indirectly alt...

How 'Dirt' Could Educate The Immune System And Help Treat Asthma

...ion to store carbon dioxide in the deep ocean will change with climate change. The direct injection of carb...nteractive mechanisms, the ocean circulation could change and affect the retention time of carbon dioxide injected into the deep ocean, thereby indirectly alt...

Cracking the perception code

... the firing rate and time between firings wouldn't change just because the stimulus duration changed. The scientists knew they hadn't quite cracked the neural code, though, because the magnitude effects weren't right; the monkeys thought that a stimulus that was 50 percent shorter was vibrating at just a s...

Plants reveal a secret and bring researchers nearer a cleaner future

...flashed the sample with a laser and registered the change using X-ray fluorescence every 10 microseconds to find out how different oxidation states developed. When carefully analysing the reaction kinetics, they observed a time delay before the O2-evolving step. This delay unambiguously proved the existence...

Restaurant seafood prices since 1850s help plot marine harvests through history

...obster more than twice a week." Tastes started to change in the 1880s, with lobsters even appearing on menu covers. The 1930s saw prices fall with the Great Depression, but they ballooned in the 1950s, with restaurants pricing lobsters at one-quarter pound (113 gram) weight increments, another reflection o...

Tropical dry forests receive international recognition

... ignored. Dr. Arturo Sanchez-Azofeifa is hoping to change that. Sanchez-Azofeifa is the director of the newly formed TROPI-DRY, a research network on tropical dry forests housed in the Faculty of Science. The Inter American Institute for Global Change Research has just funded the network to the tune of U...

Scientists characterize proteome of human cornea

...cornea swelling (Fuchs' dystrophy) or thinning and change of curvature of the cornea (keratoconus)." In order to learn more about the cornea and corneal disorders, Dr. Enghild and colleagues characterized the most abundant proteins found in the non-diseased human cornea. They identified 141 distinct protei...

New classification of eukaryotes has implications for AIDS treatment, agriculture and beyond

...y utility, to avoid the common problem of a single change causing a cascade of changes to the system. We believe this to be more utilitarian, and less problematic than traditional conventions, as it is not constrained by formally attributing a limited number of rank names." ...

Sudden change in social status triggers genetic response in male fish, study finds

...dies, Fernald and his colleagues discovered that a change in social status also causes a change in a group of brain cells that produce gonadotropin-releasing hormones--chemical signals from the br...

Seafloor creatures destroyed by ice action during ice ages

...ened in Antarctica during these periods of climate change and study the genetic and biological links between deep sea and shallow water communities.' ...

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

...ened in Antarctica during these periods of climate change and study the genetic and biological links between deep sea and shallow water communities.' ...

War on terror meets war on cancer

... common isotopes oxygen-16 and hydrogen-1, and the change allows the metabolic rate to be calculated. "As with any scientific measurement, there will be errors associated with this calculated metabolic rate," Hegg says. "Thus, having a second way to measure metabolism would be beneficial." A potential s...

Oil spills and climate change double the mortality rate of British seabirds

...ured by the NAO index and caused by global climate change from man's burning of fossil fuels." ...

Lethal needle blight epidemic may be related to climate change

... in the September issue of BioScience that climate change is to blame for the outbreak. The blight, caused by the fungus Dothistroma septosporum, causes trees to lose their needles and, in the case of the British Columbia outbreak, eventually die. D. septosporum has long been recognized as a pathogen of pin...

MIT researcher finds neuron growth in adult brain

...cent showed structural modifications. Sometimes no change for weeks was followed by a growth spurt. There we...e largest a dramatic 90 microns. "The scale of change is much smaller than what goes on during the critical period of development, but the fact that it go...

New neurons take baby steps in the adult brain

... to alter the genetics of single cells in order to change new neurons' ability to accumulate chloride ions (and thus to manipulate their response to GABA) and to make them glow with a green protein to ease their identification in the adult brain. Ge measured the electrical output of the neurons to establish...

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