Tag: "bacteria" at biology news
Fossils reveal direct link between global warming and genetic diversity in wildlife
... has a much quicker generational timeline, such as bacteria
or fruit flies." Climate change and genetics For the experiment, the research team compared DNA from voles and pocket gophers living near Lamar Cave with ancient DNA from fossilized rodents that inhabited the area at different times since 1000 B....
Bone marrow cells routinely help with wound healing
... The white blood cells arrive to fight off foreign bacteria
and infection. This inflammatory response is responsible for the red area around a wound. The inflammatory response goes away within a few days to a week, assuming there is no continued infection. "Scientists have long assumed that once the inflamm...
Identifying tick genes could halt disease, bioterrorism threat
... a nymph, which carries the Lyme disease-producing bacteria
to people, pets and other animal species. The tick's olfactory system, or what we call our noses, is in its feet. These organs recognize carbon dioxide, which animals, including people, emit when they exhale. Ticks lie in wait until they receive the ...
New fumigant to replace gas that damages ozone layer
...ethyl bromide in killing unwanted insects, moulds, bacteria
and nematodes," says Dr Daly. "This provides CSIRO and BOC with a timely opportunity to create a multimillion dollar market for this new fumigant." BOC Managing Director Graham Smith says, "This agreement continues a long and successful relations...
Diabodies act as guided missiles targeted to mammary tumor growth
...ly engineered dimeric proteins produced in E. coli bacteria
that contain the antigen-recognizing portion of antibodies formed by immune system cells to combat disease. The mini-antibody developed by Adams and colleagues, C6.5K-A, is a protein substitute for larger, naturally produced antibodies that specific...
Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
An unprecedented picture of how bacteria
latch on to human cells has been published by UK, ...ogether they define how aggressive or virulent the bacteria
are at attacking the host. Most families of adhesins belong to bacteria
that cause a single disease...
NASA satellites detect 'glow' of plankton in black waters
...to the ocean bottom and are eaten by bacteria. The bacteria
consume the algae and deplete oxygen from the water that leads to fish kills. Chuanmin Hu and Frank Muller-Karger, oceanographers at the College of Marine Science of University of South Florida, St. Petersburg, Fla., used fluorescence data from NASA'...
Winner of 2004 EMBO Science Writing Prize announced
...James Pond's mission to combat the deadly 'Pseudo' bacteria
currently a leading cause of hospital-acquired infections. Set in Hawaii, the exotic tale tells how Pond stumbles across the phenomenon of the glowing Bobtail Squid and learns how its quorum-sensing technology can be used in the fight against the Ps...
Streptococcus infects humans by thwarting blood clotting
may infect humans by using a bacterial enzyme to "...ay to new understanding of the factors that enable bacteria
to evolve host specificity, the researchers said. Howard Hughes Medical Institute investigator Davi...
Strep disrupts blood clotting to infect humans
...g enzyme to advance its infection. Streptococcal bacteria
use an enzyme called streptokinase to block the bl...s, not on other animals. "The theory is that, as bacteria
cause a local infection and begin to grow, the clotting system produces clots in the blood vessels a...
UV light, coatings reduce bacterial adhesion up to 50 percent
...y 15 to 50 percent -- the ability of some types of bacteria
to stick to a glass surface and cause contamination or biofouling, Penn State environmental engineers have found. Dr. Baikun Li, assistant professor of environmental engineering, Penn State Harrisburg, says "Ultraviolet light has been used for man...
Carnegie Mellon scientists reveal ways of studying, resolving PCB contamination in US rivers
... have used DNA fingerprinting to discover distinct bacteria
populations that decompose PCBs differently in the...ween 0.5 and 4 ppm, the team found no oxygen-using bacteria
at work digesting PCBs in sediments taken from the Grasse River in upstate New York. These findings ...
Cleaner water, more efficient electricity among UH chemical research
...archers will be making presentations, ranging from bacteria
removal in water and quantum shuttles in electrici...ronmental engineering, will focus on mechanisms of bacteria
removal from drinking water supplies using microfiltration membranes, with an emphasis on filter clo...
PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists
...eleased PCBs over several decades. They found that bacteria
in contaminated Hudson River sediment were faster ...ivers. The research team ultimately hopes to coax bacteria
with a preference for PCBs into becoming more dominant life-forms in sediments. Future studies that ...
When is a mouse like a test tube?
...cell-cell interactions, and often provide entre to bacteria
and viruses that cause disease. More than five years ago, she conceived of the idea of instigating reactions in the body between unnatural chemicals - ones created by humans and never before seen by living organisms. The unnatural chemicals she chose...
Tips from the journals of the American Society for Microbiology
... may determine susceptibility or resistance to the bacteria
that causes periodontal disease in humans say researchers from Maine and Missouri. Their findings appear in the August 2004 issue of the journal Infection and Immunity. Periodontal disease, the most prevalent chronic inflammatory disease in humans, ...
Scientists visualise cellular handmaiden that restores shape to proteins
...K. The structure of the chaperonin complex of the bacteria
Thermus thermophilus reveals clues about how the important molecule may do its job of folding new or damaged proteins within cells. Led by Professor So Iwata of Imperial College London, the team of scientists announce their findings in this month's e...
Jefferson Lab detector technology aids development of cystic fibrosis therapy
... thick mucus. This mucus clogs the lungs, trapping bacteria
and causing recurring lung infections; it also prevents digestive enzymes from reaching the intestines to break down and absorb nutrients from food. Current treatments are prolonging lives but haven't conquered the disease; most patients eventually s...
Got the time?
...activity, a range that spans the living world from bacteria
to plants to humans. And indeed a test of the method in wild type and Clock-mutant fruit flies gave similar results to those in the mouse studies. The development by Ueda and colleagues of a universally-applicable, specific, sensitive and accurate m...
Promising hospital anti-infection strategy probably won't work, study shows
...as they often do. "When you release resistant bacteria
into the community, I think it's a lot like polluting an ocean," Bergstrom said. "At first you don't notice, but then it starts to creep up on you and you have a real problem. And then it's hard, maybe even impossible, to go back and fix it." ...
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