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Tag: "destroy" at biology news

Katrina floodwaters not as toxic to humans as previously thought, study says

...hat the floodwaters from Katrina could potentially destroy chemical plants and refineries in the area, releasing a deadly brew containing toxic levels of benzene, hydrochloric acid and chlorine. Instead, high levels of bacteria and viruses were the biggest human threat, not exposure to chemicals, Pardue and ...

Scientists observe how a close bond activates the immune system

...ng invaders outright and marshaling other cells to destroy them. In the new study, Gabriele Campi, a graduate student in Dr. Dustin's laboratory, and Kaspar Mossman, a graduate student of Dr. Groves's, created a synthetic dendritic cell using purified antigen and adhesion molecules (molecules that the cel...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...lling peptide is being tested to image, target and destroy primary and metastatic breast cancer cells. A no...eats up their gold shell, causing the particles to destroy tumor cells. Furthermore, because of their size − a few nanometers, or billionths of a meter, ...

Center releases new public survey on stem cells

...r example - might be as useful without the need to destroy embryos, but the scientific consensus so far is that embryos remain the best research choice. Typically, the embryos used are those remaining at the conclusion of fertility treatments that would otherwise be discarded or kept in frozen storage; a ba...

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

...day calving icebergs ploughing across the seafloor destroy everything in their path. Imagine the impact of ice sheets during the ice ages that covered a much wider area in a time of lower sea levels.' The team's research will lead to a radical rethink of the evolutionary history of Antarctica as the work ch...

Seafloor creatures destroyed by ice action during ice ages

...day calving icebergs ploughing across the seafloor destroy everything in their path. Imagine the impact of ice sheets during the ice ages that covered a much wider area in a time of lower sea levels.' The team's research will lead to a radical rethink of the evolutionary history of Antarctica as the work ch...

Kenya halts first field trials of GM maize

...red the Kenya Plant Health Inspectorate Service to destroy the crops. Songa was quoted in Kenya's Sunday Nat...can maize farmers overcome the pest". Stem borers destroy up to 12 per cent of maize growing in Kenya, amounting to US$76 million in lost harvests per year. ...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...ning near-infrared light on the animal's skin will destroy lymphatic tumors, while leaving normal cells intact. "It's a really interesting idea," says Felsher, an assistant professor of medicine and of pathology. "For a long time people have thought about ways to target cancer cells, and this is a very prom...

Study provides insight into cellular defenses against genetic mutation

...protect the mRNA from enzymes that would otherwise destroy it from both ends. Along with its protective role, the 5-prime cap is designed to bind to a complex of two linked cap-binding proteins (CBPs), CBP80 and CBP20. The cap-binding complex is part of the larger pioneer translation initiation complex, wh...

Amphetamines reverse Parkinson's disease symptoms in mice

...with high doses of the drug. Such high doses might destroy nerve tissue in normal mice and in humans, who are generally more sensitive than mice to such drugs. "Amphetamines are controversial drugs, and there's no reason to suggest that amphetamines themselves should be used to treat Parkinson's," Gainetdin...

Emerging staph strains found to be increasingly deadly and deceptive

...enes control the ability of S. aureus to evade and destroy neutrophils, their work could lead to new medical ...f disease is necrotizing pneumonia, where bacteria destroy lung tissue. "The reason that some mild infections become severe or fatal is not well understood, b...

Dendritic cells offer new therapeutic target for drugs to treat MS and other autoimmune disease

...ltiple sclerosis, a disease that causes T-cells to destroy the myelin protein sheath around nerves in the central nervous system. The drug had a similar effect on dendritic cells, causing most of them to die. In the mouse model, investigators found that more of the myelin sheath was preserved in mice treated...

Research casts doubt on circulating stem cells

...ing irradiation techniques, researchers managed to destroy the bone marrow in mice and replace it with cells which became green-fluorescent thanks to a genetic addition. A short time later they then discovered green-fluorescent nerve cells in the mice's brains. This appeared to them to be evidence that the s...

An essential regulator of body weight revealed

...heria toxin to these animals, the scientists could destroy NPY/AgRP neurons without causing other harm. Once they'd eliminated those neurons, the scientists monitored precisely how much the animals ate by keeping them in a cage equipped with a device that measures each time a mouse licks the bottle containi...

Software 'agents' could help unmask reality of disease clusters

...certain measures to protect individual privacy can destroy the information needed for geographical analyses, making it impossible to address many important public health concerns," said Dr Maged Boulos, from the School for Health at the University of Bath. "Some of the solutions used to preserve confidentia...

Research team receives $7.5 million to study cassava

...s, a particularly devastating plant virus that can destroy up to 60 percent of a cassava crop. A cassava plant usually reaches 3 to 4 feet in height, though some plants can grow up to 13 feet tall. The researchers will work on developing new types of cassava plants that have increased levels of zinc, iron,...

Renewed hope for Parkinson's patients

...rior invaders. These cells stand ready to find and destroy cells infected by viruses before the virus can spread. "We don't have direct information about the role of the DNA damage pathway in regulating immune responses to infectious diseases, but given what we have shown here, it is certainly plausible tha...

New study finds how cells with damaged DNA alert the immune system

...rior invaders. These cells stand ready to find and destroy cells infected by viruses before the virus can spread. "We don't have direct information about the role of the DNA damage pathway in regulating immune responses to infectious diseases, but given what we have shown here, it is certainly plausible tha...

Lactose intolerance linked to ancestral environment

...n antimicrobial compounds, and they may be used to destroy food-borne pathogens, especially in hot climates. Nausea and vomiting early in pregnancy also may protect women and their embryos from food-borne pathogens and other toxins." A Darwinian medicinal view complements traditional medicine, Sherman said,...

Breast tumors in mice eradicated using cancer vaccine

...s eventually enlist killer T cells to seek out and destroy the tumor cells that display the HER-2/Neu molecul...en, where Listeria usually colonizes, seek out and destroy the tumor. This system ensures an increase in the production of killer T cells that can recognize th...

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