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Tag: "contact" at biology news

Serious adverse reactions to smallpox vaccine appear to be limited

...No preventable life-threatening adverse reactions, contact transmissions, or adverse reactions that required treatment with vaccinia immune globulin were identified. Serious adverse events were more common among older revaccinees than younger first-time vaccinees. "The absence of preventable serious adverse...

Antibacterial coatings cut infection rates

...tion of medical devices is bacteria that settle on contact lenses and cause inflammation and, more rarely, in...mpany, Biosignal Limited, to develop antibacterial contact lenses," Professor Griesser said. "This is an excellent example of where we can apply fundamental k...

A biosensor layered like lasagna

...his allows the glucose to diffuse in and come into contact with the enzymes." "The polymers trap the enzymes in place," Liu said. "You can go up to five or six layers to improve the sensitivity of the detector, but after that, the more enzyme layers" inhibit diffusion of the glucose. Now that the glucose...

'Virus chip' detects new virus in prostate tumors

..., Ganem says, though it was probably acquired from contact with rodents. It is extremely unlikely, however, that contact with mice was responsible for the virus detected in prostate tumors in the study. More likely, some ...

Sweetgum tree could help lessen shortage of bird flu drug

...ll but growing number of humans who have had close contact with infected birds. There is a skyrocketing demand for Tamiflu, but some experts fear there won’t be enough of the drug to treat everyone if a worldwide pandemic occurs. The supply problem resides in the drug’s source: The shikimic acid used to mak...

Satellites show Amazon parks, indigenous reserves stop forest clearing

...tially inhibit deforestation up to 400 years after contact with the national society. There was no correlation between population density in indigenous areas and inhibition of deforestation. In much of the Amazon, not only can protecting nature be reconciled with human habitation ?it wouldn't happen without...

Birds that make teeth

...een known that if mouse tooth-forming tissue is in contact with bird jaw tissue, the bird tissue is able to follow the instructions given by the mouse tissue and participate in making teeth, and that these teeth look very much like those of mammals. However, Drs. Matthew Harris and John F. Fallon and colleag...

Boosting newborns' immune responses

...rtant global health benefits. "Birth is a point of contact with healthcare systems," he says. "Families may not see a health care provider after that. From a global health perspective, if you can give a vaccine at birth, a much higher percentage of the population can be covered." Conceivably, TLR8 stimulat...

Ocean virus identified in human blood samples

...s could include meat, seafood, contaminated water, contact exposure and blood transfusions, researchers say. Evidence suggests that Vesiviruses and other disease-causing caliciviruses are world wide, they said. ...

Cell barrier shows why bird flu not so easily spread among humans

... the H5N1 avian influenza virus, mostly from close contact with infected poultry, the fact that the virus does not spread easily from its pioneering human hosts to other humans has been a biomedical puzzle. Now, a study of cells in the human respiratory tract reveals a simple anatomical difference in the ce...

Commonly used antidepressants may also affect human immune system

... system is believed to "converse" through physical contact -- one type of immune cell touches another, setting off a response. Specifically, "antigen presenting cells" display their antigens (bits of a foreign invader) to T-cells, and a resulting physical coupling between the antigens and the T-cells will p...

Medical experts: US unlikely to have enough vaccines to stop avian flu

...rain that can spread efficiently by human-to-human contact within that time. Their median worst-case estimate of the number of people who would die, should that happen, was 6 million in the United States and 180 million worldwide. Their median best-case estimates were 500,000 dead in the United States and 20...

New University of Toronto research a 'pore' excuse for engineering

...ith silica glass, preventing them from coming into contact and interfering, with each other. But the PMO film described in this study acts as a better insulator and would take up far less room, allowing components to shrink even further. "Industry is always looking for a better insulator," Hatton says. "This...

Newly discovered protein kills anthrax bacteria by exploding their cell walls

...that will germinate any anthrax spores it comes in contact with. As the spores germinate, the PlyPH protein will kill them, usually in a matter of minutes. The combined solution could be used in buildings, on transportation equipment, on clothing, even on skin, providing a safe, easy way to fight the spread ...

Viral protein helps infected T cells stick to uninfected cells

...ordinate immune responses in part through physical contact with other immune cells. The cells adhere to one another using a protein known as LFA-1, which is found on the cells' surface. In this study, Lairmore and his collaborators examined the influence of the p12 protein on LFA-1 adhesion. The researcher...

How nerve cells stay in shape

...e cells store and transmit information via special contact sites called synapses. Synapses also play a role i...ucture and the functional characteristics of these contact sites change. Scientists are only now beginning to understand the molecular processes which cause th...

Common practices at petting zoos put visitors at risk

...ich includes specific recommendations for managing contact between animals and people visiting a petting zoo environment, is published annually in the CDC publication Morbidity and Mortality Weekly Report. The 2005 compendium can be found online at http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5404a1.htm . T...

Thin tough skin, slow-growing gills protect larval Antarctic fish

...gs have too little to allow survival during direct contact with ice. Looking more closely, the researchers discovered that the gills of all three species were undeveloped at hatching, minimizing the risk of ice passing through them to get inside. The delicately thin skin of the larval fish may offer additio...

Avian influenza virus in mammals spreads beyond the site of infection to other organ systems

...tract (by feeding on infected chicks), or by close contact with respiratory-infected cats. The researchers, led by Dr. Thijs Kuiken, then examined mucous membranes (throat, nasal, and rectal swabs) and organ systems (respiratory, digestive, nervous, cardiovascular, urinary, lymphoid, and endocrine) for the ...

Carbon cycle was already disrupted millions of years ago

...ms and then subsequently released upon coming into contact with magma. A third option is that carbon from organically-rich sediment came into contact with hot magma. As a result of this the organic molecules combusted into CO2 and water. Yvonne van...

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