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Tag: "killing" at biology news

Low oxygen likely made Great Dying worse, greatly delayed recovery

...s the greatest mass extinction in Earth's history, killing 90 percent of all marine life and nearly three-quarters of land plants and animals. Ward said paleontologists had previously assumed that Pangea was not just a supercontinent but also a "superhighway" on which species would have encountered few road...

Scientists reveal the shape of a protein that helps retroviruses break into cells

...s the greatest mass extinction in Earth's history, killing 90 percent of all marine life and nearly three-quarters of land plants and animals. Ward said paleontologists had previously assumed that Pangea was not just a supercontinent but also a "superhighway" on which species would have encountered few road...

Breakthrough isolating embryo-quality stem cells from blood

...ong enough to detect stretching to be used without killing the cell. According to Dr Michael Watts, an expert in haematology and stem cells at University College London, there are just 10,000 primitive cells in the average adult's bloodstream. Of those, only 500 might have the potential to replace embryonic...

NHGRI targets 12 more organisms for genome sequencing

...about 20 million people in South America alone and killing 50,000 of them a year. Having the genome sequence of Rhodnius prolixus presents an opportunity for experts from the United States, Canada and Latin America to collaborate on understanding this widespread infectious disease. The pea aphid (Acyrthosip...

Disabling gene defuses rheumatoid arthritis in mice

...r study revealed that neutrophils in the mice were killing themselves through a cellular self-destruct process known as apoptosis. Damaged or highly stressed cells can pull their own plug in this or a similar manner to prevent themselves from becoming cancerous. "It seems that evolution has somehow provided...

Scientists find viruses can't stick to sea bugs in the dark

...uge areas of the sea with their waste products and killing fish, sea mammals such as whales, dolphins and seals, and even humans. Control of these blooms is vital to the health of the seas. "Research using cyanophages to control blooms of cyanobacteria must take light into consideration," explains Ying Jia....

Roundup®highly lethal to amphibians, finds University of Pittsburgh researcher

...dup® would have an indirect effect on the frogs by killing their food source, the algae. However, he found th...d because it killed most of the frogs. "It's like killing all the cows in a field and seeing that the field has more grass in it--not because you made the gra...

Cancer related gene p53 not regulated as indicated by previous tissue culture research

...the development of specific drugs that unleash the killing power of p53 by interfering with its negative regulators. Our cells are vulnerable to DNA breaks caused by UV light, ionizing radiation, toxic chemicals or other environmental damages. Unless promptly and properly repaired, these DNA breaks can let ...

Discovery could be key to bioterrorism defense

...rged among horses and humans in Hendra, Australia, killing two people. Hendra recently reemerged in Queenslan...ratory illness occurred in Malaysia and Singapore, killing more than 100 people. Last year, two further Nipah virus outbreaks occurred in Bangladesh, killing r...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

... mid-14th century, the plague swept through Europe killing nearly one-third of the population. It returned wi...ier from person to person, and is far more deadly, killing 100 percent of those who do not receive the right antibiotics soon after exposure. "There is," the a...

Immune system's distress signal tells bacteria when to strike back

...ever, has the tools to engineer its own escape ?by killing off the host. This wily pathogen can evade a host's immune system. It can repel antibiotics, secrete toxins similar to those used by anthrax, latch onto the bowel wall, bore its way through, and flow into the blood stream. As a consequence, patients...

Poaching, logging, and outbreaks of Ebola threaten central African gorillas and chimpanzees

... A combination of natural and man-made threats is killing gorillas and chimpanzees in Central Africa, and experts say $30 million is needed for special programs to save some of mankind's closest relatives from disappearing. An action plan drafted by more than 70 primatologists and other experts who met in ...

First production of human monoclonal antibodies in chicken eggs published in Nature Biotechnology

...cken-produced antibodies demonstrate enhanced cell killing compared to conventionally produced anti-cancer an...-cancer antibodies show dramatically enhanced cell killing activity elevates the chicken system considerably relative to other non-traditional production techn...

Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University

...ditions." Fe-TAMLs already have shown promise in killing a simulant of a biological warfare agent (anthrax), reducing fuel pollutants, treating pulp and paper processing byproducts, and detoxifying pesticides. A major goal is to develop Fe-TAMLs as a safe, cost-effective means of global water decontaminati...

Major breakthrough in the treatment of cancers and infectious diseases

...stem, NK cells are responsible for recognizing and killing cancer cells and cells infected by viruses such as...uction of NK cells that are much more effective at killing cancer cells. Inhibiting the function of EAT-2 with medications could therefore stimulate the killer...

Virginia Tech group adds tools to DNA-targeted anti-cancer drugs

...ties of the molecules they are creating to deliver killing blows to cancer cells. The man-made molecular comp...xes enter cancer cells and, when signaled, deliver killing medicine or cause the cell to change. The new supermolecules have more units that will absorb light ...

Bad aftertaste? New sensory on/off switch may 'cure' bane of artificial sweetener search

...ties of the molecules they are creating to deliver killing blows to cancer cells. The man-made molecular comp...xes enter cancer cells and, when signaled, deliver killing medicine or cause the cell to change. The new supermolecules have more units that will absorb light ...

Novel plague virulence factor identified

...responsible for the plague especially efficient at killing its host. In the process, the team not only demonstrated that the use of the common roundworm is a valid model for studying the virulence of Yersinia pestis, the bacterium that causes plague. They also showed that the interaction between Y. pestis a...

New Look at DNA Hints at Origin of UV Damage

...responsible for the plague especially efficient at killing its host. In the process, the team not only demonstrated that the use of the common roundworm is a valid model for studying the virulence of Yersinia pestis, the bacterium that causes plague. They also showed that the interaction between Y. pestis a...

Fragment of yellow fever virus may hold key to safer vaccine

...more than 200,000 people a year, mostly in Africa, killing about 30,000 of them, the World Health Organization estimates. No drug treatment is effective against the virus. Since yellow fever is spread by mosquitoes, much of America has been safe from the disease thanks to control efforts aimed at the insect...

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