Rounduphighly lethal to amphibians, finds University of Pittsburgh researcher
...ut of this was that Roundup, something designed to kill plants, was extremely lethal to amphibians," said Relyea, who conducted the research at Pitt's Pymatuning Laboratory of Ecology. "We added Roundup, and the next day we looked in the tanks and there were dead tadpoles all over the bottom." Relyea ini...Liverpool scientists uncover how E.coli became lethal
...acterium called E. coli developed the ability to kill people through food poisoning, bloody diarrhoea and kidney failure. Normally E. coli bacteria live in the intestine and don't pose any danger, but some varieties can cause fatal food poisoning. The most serious in the UK is E. coli O157, which i...Genetic testing could bolster radiotherapy's effectiveness against cancer
...unishing amount of radiation that ordinarily would kill them. "Previous research has also implicated NF-ka...rovide might help us to devise better therapies to kill tumors," he said. "Knowing in general that proteins A, B and C are defending the cell may allow us t...Lung cancer vaccine trial continues at UK's Markey Cancer Center
...on that directs the immune system to recognize and kill tumor cells in the body. "UK is in the forefront of cancer research and therapy with this study," said Yannelli. "Only in the past five years have scientists learned to grow these cells in large numbers and manipulate their biology in laboratory...Ebola virus: from wildlife to dogs
.... It usually flares up as intense epidemics. These kill 80 % of the people infected. Seven such outbreaks have hit Gabon and the Republic of Congo since 1994, leading to 445 cases resulting in 361 deaths. Ebola virus thus constitutes a grave public health problem in these countries. No medicine or vaccine...At the molecular level, the predator is the prey
...normally found in a T. granulosa newt is enough to kill the average human being. The only organisms on Earth that can eat T. granulosa newts and survive are some T. sirtalis garter snakes. TTX is a defensive compound found in some puffer fish, octopuses and primitive chordates. It is used in low concentra...Viruses may one day help treat brain tumors
... Ohio New research shows that a virus designed to kill cancer cells can significantly increase the surviv...virus leaves normal tissues unharmed. Viruses that kill cancer cells are known as oncolytic viruses. The findings are published in the April 1 issue of the......ving them vulnerable to rapid eradication. Hunters kill primates for food and to sell the meat, traders capture them for live sale, and loggers, farmers, and land developers destroy their habitat. "More and more, mankind's closest living relatives are being cornered into shrinking areas of tropical fo...JBC study shows that bigger isn't necessarily better for amyloid proteins
...signaling across synapses. Oligomers don't have to kill the cells to cause problems for neurons." Just how the oligomers cause the cells to leak remains to be determined. However, Dr. Glabe has his hypotheses. "The simplest explanation for why oligomers are specifically toxic is that the edges of beta she...Tips from the journals of the American Society for Microbiology
...containing phage K was analyzed for its ability to kill Staphylococci on human skin. Results showed a sig...s. "In this respect, we have shown its ability to kill a broad range of newly isolated pathogenic staphylococci, including both human and veterinary strain...New drug may be used to treat women with ovarian cancer
...lls could be vulnerable to chemotherapy that would kill the cells while their reproductive properties are weakened. "Ovarian cancer is the leading cause of gynecologic cancer deaths," Testa said. "It usually isn't detected until it's quite advanced and is hard to treat. This is one drug that is well-tol......ules can easily penetrate biological membranes and kill cells, but their potency is short-lived hence the ... docking point for the body's own immune system to kill the cancer cell. The Institute team demonstrated that cancer cells could be destroyed more efficient...Researchers make gains in understanding antibiotic resistance
...o forms of that antibiotic work synergistically to kill bacteria. Finally, the researchers used x-ray crystallography to explore at high resolution the structural basis of a particular ribosomal mutation dubbed L22 that confers resistance to macrolides such as erythromycin. In a seeming paradox, said Ste...Unexpected lock and key mechanism found for the assembly of tumor blood vessels
...iogenesis may choke off a tumor's blood supply and kill the cancerous cell. Varner and her team found that a specific integrin protein called alpha 4 beta 1 was produced at high levels in one part of a developing blood vessel, the interior area called the endothelia. The integrin was not produced in mat...JCI table of contents May 2, 2005
...pate in this process can effectively recognize and kill infected cells and release antiviral proteins known as cytokines. Many types of cells are involved in this response, including T cells restricted by CD1 antigen-presenting molecules. These cells help control bacterial infections but it was not unde...Why are coyotes getting more aggressive?
...and do not to leave them out at night. Coyotes may kill or injure a pet, especially small dogs and cats. Walk dogs on leashes and accompany pets outdoors, especially at night. Provide secure shelters for poultry, rabbits and other vulnerable animals. Keep trash secure and compost bins covered. Monitor bi...Scientists reveal how disease bacterium survives inside immune system cell
...ach human. Typically, neutrophils ingest and then kill harmful bacteria by producing molecules that are toxic to cells, including a bleach-like substance called hypochlorous acid. Once the bacteria are killed, the involved neutrophils self-destruct in a process known as apoptosis. Recent evidence suggest...Combating antibiotic resistance
...n accidental benefit: resistance to the drugs that kill them. Because the mutations were assumed to be spontaneous, there seemed no obvious way to prevent them and thus antibiotic resistance appeared inevitable. However, in their work published in the open-access journal PLoS Biology , a collaborative ...Ocean climate predicts elk population in Canadian Rockies
...atened because wolves, their main predator, cannot kill and eat fast enough to wipe out the whole population. Also, wolves tend to kill one another as their available prey dwindles, so a stasis is maintained naturally. Nevertheless, He......seizures and deafness in those victims it does not kill outright. Meningococcal meningitis caused by the meningococcus bacteria is the only form of the disease to spread in epidemic form. Outbreaks occur throughout the world but are most common in the 'meningitis belt' of semi-arid sub-Saharan territory...