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Tag: "concern" at biology news

Electric fish in Africa could be example of evolution in action

...species, a process known as speciation, is a major concern in understanding evolution. Arnegard's fish may allow researchers to test if a specific type of speciation is possible. One common type of speciation is geographically dependent. Animals diverge into separate species because they become physically ...

Prion find points way to test for human 'mad cow' disease

...id Soto, senior author of the Science paper. "The concern is that if many people are incubating the disease silently, then secondary transmission from human to human by blood transfusion or surgical procedures could become a big problem," he continued. "This result is an important step toward a practical bi...

Global warming may have damaged coral reefs forever

...the observed decrease in herbivorous fish is a key concern as they control algal spread. Researchers speculate that the reefs' inability to reseed is down to their relative isolation. A lack of nearby reefs to provide larvae which could settle and grow into new coral structures and the absence of favourab...

Researchers find 'secret weapon' used by SARS virus

...s that Makino's group intends to pursue. "The main concern for everybody is whether SARS will come back," Makino said. "We want to be ready for it if it does." ...

A new look at the state of the oceans

...past years. Reasons for this include an increasing concern over species extinctions and habitat destruction on the one hand, and the improvement of detailed recording methods for existing species on the other. Particularly genetic methods have been used ever more frequently for species identification. In man...

UN review shows need to halt destructive fishing practice

... low potential for recovery, this is of particular concern for these stocks," the review said. The draft review called bottom trawling a particular concern, due to its tendency to over-fish both targeted and non-targeted species, and the damage it causes to vulnerable ecosystems that provide critical habit...

Tropical forest CO2 emissions tied to nutrient increases

...ntially more carbon dioxide into the atmosphere, a concern to scientists monitoring global change, says a new University of Colorado at Boulder study. The study showed when either phosphorus or nitrogen -- both of which occur naturally in the rain forest soils -- were added to forest plots in Costa Rica, th...

Many cleaners, air fresheners may pose health risks when used indoors

...ears ago, when a handful of new studies raised the concern that consumer products may be contributing to indoor pollution levels in ways that were not fully understood, the ARB commissioned Nazaroff and his team to study the problem. Four years in the making, the team's 330-page study and report, "Indoor Ai...

Study reveals how ADHD drugs work in brain

... new ADHD treatments, and comes amidst deep public concern over the widespread abuse of existing ADHD medicines. "There's been a lot of concern over giving a potentially addictive drug to a child [with ADHD]," says lead author Craig Berridge, a...

Innocuous intestinal bacteria may be reservoir for resistance

...y for Microbiology in Orlando, Florida. "There is concern that veterinary therapeutic usage of antibiotics in animals is responsible for the emergence of drug-resistant Salmonella. For dairy farms recently surveyed in Georgia, there was no association found between antibiotic use and isolation of multi-dru...

Dartmouth study finds that arsenic inhibits DNA repair

...those found in cigarette smoke," says Andrew. "The concern is that exposure to drinking water arsenic may exa...nic levels in private wells. This is of particular concern since the regions where arsenic levels are high are in rural regions, such as New Hampshire, Maine, ...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...cted. "In this instance, it appeared the biggest concern was not the aquatic toxicity of the pyrethrin insecticide in the mosquito spray, but the fact that the non-toxic synergist actually synergized the 'wrong' thing - pyrethroid pesticides that were already in the creek sediments," said Weston. "This i...

Discovery may speed forest biotechnology

...ngs, he said. However, the level of regulation and concern about genetic engineering may prevent even this application. In this research, scientists studied the genes CO and FT that were first isolated from the annual plant Arabidopsis. The genes in that plant are responsible for the day-length regulation o...

Inflammation and drugs to control this activity studied in a variety of tumors sites

...s expected based on previous findings. "The first concern is, should patients with initial biopsies showing no malignancy but showing chronic inflammation be followed more closely and perhaps re-biopsied more frequently?" Gupta said. Gupta's group plans future studies that will be similar in design, but ha...

Suicide risk does not increase when adults start using antidepressants, study finds

...cent after treatment began. Given recent public concern over a possible link between suicide and antidepressants, Simon says he fears people may mistakenly believe that suicidal behavior is common after taking antidepressant medications. That misperception could lead to fewer people with depression being ...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

...Blask. “The effects we are seeing are of greatest concern to people who routinely stay in a lighted environment during times when they would prefer to be sleeping,?said Mark Rollag, Ph.D., a visiting research scientist at the University of Virginia and one of the study co-authors. “This is because melatonin...

Scientists identify molecular structure of key viral protein

... viruses, which are classified as select agents of concern for biodefense. The pre-fusion structure of the F protein combined with the structure of the protein in its post-fusion state, which was determined and reported earlier in 2005 by this same research team, gives scientists a complete picture of how t...

Plant-derived vaccines safeguard against deadly plague

... tamed since the advent of antibiotics. But a new concern has emerged in recent years with respect to bioterrorism. "There have been discovered some resistant strains to antibiotics and that poses a concern, especially if plague would be used as a bioweapon," said Luca Santi, a research assistant professor...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...esponse to making errors, with increased worry and concern about having done something wrong," he says. "We hope that this kind of research will help us get a handle on this condition and see which normal brain circuits have gone awry in people with OCD." The new finding does not have immediate implications ...

Soil-bound prions that cause CWD remain infectious

...des and demonstrated its pathogenesis. "Our first concern was to determine whether this organism was truly associated with his clinical syndrome," the team wrote. Despite ineffective neutrophil immune cells, the patient's immune system still tagged the bacterium as an invader. Researchers also exposed ...

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