Tag: "harming" at biology news

Geologists find spines make comfy home for some marine organisms

...t grow on top of other organisms without seriously harming them. Her primary focus was the bivalve Spondylus regis which has a spiny surface, but the spines are so delicate and widespread, they don't appear capable of protecting the organism directly. Jones compared Spondylus with three other bivalves: the ...

Water, sediments in ice-bound antarctic lakes may harbor unique microorganisms, ecosystems

...re those lakes without contaminating the waters or harming any microbial communities that may exist there will be an extremely complex undertaking that will require "significant multinational cooperation." The United States Antarctic Program, which is managed by NSF and which coordinates almost all U.S. res...

Scientists find alcohol, drugs boost endorphins in key forebrain region

...arch for compounds that can block cravings without harming addicted people. The researchers administered alcohol, cocaine, amphetamine, nicotine and an inactive salt solution to laboratory rats via injections twice at three-hour intervals. Then, using a technique known as microdialysis combined with solid-p...

Stanford researchers uncover possible approach to attack HIV-infected cells

...nefit patients by targeting infected cells without harming the healthy cells the body needs to defend itself against disease. Plans are under way to test the drug in people with the HIV virus. HIV devastates the body's immune system by taking over and killing a particular class of white blood cells k...

Scientists battle cold weather mold

...ce. Whats even better is that it does this without harming the plants upon which the snow molds are living. This fungus is what we call a hyperparasite, says McBeath. It acts as a parasite on another parasite. And in this case ends up acting as a natural and very effective method of disease control as well. ...

Biological evidence can persuade people to change unhealthy habits

... confronted with evidence of how their behavior is harming their bodies, some people will adopt healthier attitudes and lifestyles, according to a review of existing research. Modifiable behaviors, such as smoking, obesity, alcohol and lack of exercise are responsible for nearly half of the leading causes of...

Researchers develop blood test to diagnose Alzheimers-type changes in mice

...f the brain and into the surrounding blood without harming the animals and were periodically retested for blood Ab. After 24 hours, the researchers examined each animals brain tissue for plaques, focusing on two key regions involved in Alzheimers disease: the hippocampus and the cingulate cortex. Before m...

Some animals can recognize degree of kinship by scent

... litter -- so she did the next best thing. Without harming the squirrels, she took a wide variety of scent-gland samples, transferred the scents to coded plastic cubes, and placed the cubes at the entrances of individual burrows. Mateo made sure all the odors were new to the squirrels that would smell them, ...

Researchers solve killer protein's 'crime'

...ecifically kill off immortal cancer cells, without harming healthy cells," says Hyung Don Ryoo, Ph.D., a postdoctoral fellow at Rockefeller and first author of the paper. Other authors of this paper include Andreas Bergmann, assistant professor at M.D. Anderson Cancer Center, University of Texas, Houston, ...

Snowmobiles can stress wildlife

...evidence that current levels of snowmobile use are harming the populations of elk or wolves studied -- both are stable. However, they caution that their results do not mean that snowmobile use in national parks is benign. "The populations we studied apparently can compensate for the current level of stress,...

'Trojan horse' technology destroys blood supply to cancer tumors in mice

...blood vessels supplying human solid tumors without harming the vasculature of normal tissue. "This is like a 'Trojan horse' approach to kill the blood vessels that supply solid tumors. We're using the vascular endothelial growth factor (VEGF) as a carrier to deliver a toxic agent selectively to the tumor's b...

New predictive marker found for prostate and colon cancer

... could kill prostate and colon tumor cells without harming the normal epithelial cells lining the inside of these organs. In her study, Ross first measured levels of HIP1 expression in 60 cancer cell lines and a tissue microarray of primary tumors from the National Cancer Institute, which included hundreds o...

Medicated ecosystems: Human drugs alter key aquatic organism

...an eventually end up polluting the environment and harming the organisms that live in it. Says UW-Madison zoologist Stanley Dodson, who studies freshwater ecology, "Pharmaceuticals can be detected in many surface water streams and lakes, yet we know little about how these strongly biologically active chemic...

Invasive species: Those who live together invade better

...en a problem, disabling native ant populations and harming humans, pets, livestock, and other living organisms. The mealybugs pose a problem by feeding upon and damaging agriculturally important grasses such as those used for cattle grazing, as well as those used in lawns and on golf courses. The relation ...

Kiss mistletoe goodbye this season for better tree health

... that mistletoe is especially hard to kill without harming the tree in the process, Watson explained. "One can repeatedly cut off mistletoe to prevent it from making seed and therefore spreading, but that is very labor intensive," he noted. "Or one can prune the infected branch, but that is only affective if...

Cocaine harms brain's 'pleasure center,' addict study finds

...caine bites the hand that feeds it, in essence, by harming or even killing the very brain cells that trigger the "high" that cocaine users feel. This first-ever direct finding of cocaine-induced damage to key cells in the human brain's dopamine "pleasure center" may help explain many aspects of cocaine addic...

Scientists hone in on cause of amphibian deformities

... may be affected by the same environmental insults harming amphibians. We should heed their warning."...

Researchers identify protein that kills cancer cells

... protein as a means of killing tumor cells without harming normal cells because normal cells already produce significant amounts of the protein." Anant already is looking at whether it is possible to use the protein in animal models of cancer to see whether it has the same effect in their tumors as it did in...

Ozone may provide environmentally safe protection for grains

...minate insects in grain storage facilities without harming food quality or the environment. Ironically, the g...nternational treaty banning the use of ozone-layer harming chemicals currently used to rid food storage facilities of insects. When ozone is used for killing g...

The dollars and sense of protecting the ocean

...ver-fishing, habitat destruction and pollution are harming much of the world's oceans and the life within them. For instance, recent studies have shown that the biomass of 'food' or high tropic level fishes in the North Atlantic have declined by two-thirds since the early 1950s, and that world fisheries catc...

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