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Tag: "microbes" at biology news

Antibody signal may redirect inflammation to fuel cancer

... cells, or leukocytes, engulf and destroy invading microbes when receptors on their surface receive a signal from serum in the blood -- often an antibody produced by a B cell in the separately evolved "acquired" immune system. Now UCSF researchers have found that in the presence of precancerous tissue, le...

Deep in the ocean, a clam that acts like a plant

...en said. Life on Earth may have got its start with microbes living on such chemical reactions, before the evolution of photosynthesis. "And they’re just plain interesting," Eisen added. If you were thinking that giant clams sound tasty, think again. The hydrogen sulfide gives them a strong smell of rott...

MIT biologists solve vitamin puzzle

...tion of Nature. Vitamin B12 is produced by soil microbes that live in symbiotic relationships with plant roots. During the 1980s, an undergraduate research course taught by Walker resulted in a novel method for identifying mutant strains of a soil microbe that could not form a symbiotic relationship with a...

Bacteria could steady buildings against earthquakes

...hquakes, according to researchers at UC Davis. The microbes can literally convert loose, sandy soil into rock. When a major earthquake strikes, deep, sandy soils can turn to liquid, with disastrous consequences for buildings sitting on them. Currently, civil engineers can inject chemicals into the soil to bi...

E. coli bacteria migrating between humans, chimps in Ugandan park

...health," he said. He noted that the exchange of microbes between non-human primates and humans is not new. Two deadly viruses, HIV and Ebola, are believed to be linked to chimpanzees and other non-human primates. Human diseases also pass to monkeys and apes, with equally dire consequences: Pneumonia, respi...

Bacterial response to oxidation studied as toxin barometer

...w.cee.vt.edu/people/love.html) began her work with microbes by finding organisms that could be used to digest ...canaries?as an early warning system to protect the microbes in wastewater systems, Nancy Love began to look for other applications, from water monitoring in gen...

Genomics throws species definition in question for microbes

...between microorganisms, and some of the secrets of microbes that had yet to be cultured in the lab (and hence ...nformation, the means for classifying non-cultured microbes are limited under the current paradigm, and microbial species do not always demonstrate the phenotyp...

New science of metagenomics 'will transform modern microbiology'

...tagenomics, where the DNA of entire communities of microbes is studied simultaneously, presents the greatest o...essary for survival. There are billions of benign microbes in the human body, for example, that help to digest food, break down toxins, and fight off disease-c...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

...ediation -- the stimulation of naturally occurring microbes that Kostka calls "hidden heroes" -- to promote ba... environments where microorganisms dominate. These microbes are the 'hidden heroes' that do the work of bioremediation. Our new project will provide the basic s...

MIT's ocean model precisely mimics microbes' life cycles

...hink of them-water filled with millions of diverse microbes that wax and wane in relative abundance through in...ions and test hypotheses about the role of oceanic microbes in global processes. This will help guide decisions about responsible use of the oceans in this era...

Microbes compete with animals for food by making it stink

... study suggests. Ecologists have long recognized microbes as decomposers and pathogens in ecological communi...them for their own growth would be advantaged over microbes that could not prevent their resource from being consumed by animals," Hay added. "If microbes could...

ASU researchers test antibacterial effects of healing clays

.... "What if we discover a mechanism for controlling microbes that had never been discovered before? It is these avenues, at the boundaries of scientific discovery, at the edges of my field and knowledge (and Shelley's), where such discoveries are made." National Institutes of Health (NIH) program directors ...

'Killer' B cells provide new link in the evolution of immunity

...ation of antibodies that tag foreign particles and microbes for destruction. "When examining fish B cells we see them actively attacking and eating foreign bodies, which is a behavior that, according to the current dogma, just shouldn't happen in B cells," said J. Oriol Sunyer, a professor in Penn Vet's Dep...

Nature's process for nitrogen fixation caught in action

...ked whether the biological process, carried out by microbes that contain the enzyme nitrogenase, follows the same pathway as recently reported chemical methods. Their research method resulted in the ability to witness steps in the biological process that enables some microorganisms to convert atmospheric nitr...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...arasites, they cannot deal well with the very real microbes continuously coming into the nose." This, Lane notes, may promote growth of bacteria and fungi in the nose, which is a common finding in those with chronic sinusitis with polyps. ...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

... finding paleontological evidence of these ancient microbes has proven elusive. At the AGU session, G. Todd Ventura of the University of Illinois-Chicago will describe what may be the earliest archaean fossil evidence yet discovered-rock samples that are 2.71 billion to 2.65 billion years old that were colle...

Siberian lakes burp 'time-bomb' greenhouse gas

...being released into the bottom of lakes, providing microbes a banquet from which they burp out methane as a byproduct of decomposition." "Permafrost models predict significant thaw of permafrost during this century, which means that yedoma permafrost is like a time bomb waiting to go off - as it continues t...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

..., mollusks, sea slugs, worms and more), algae, and microbes over a range of habitats at French Frigate Shoals. Although some of these smaller organisms may not be as charismatic as monk seals, or colorful aquarium fish (until you look under a microscope), they form the complex tapestry that supports the exis...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...hal DNA library is riddled with contamination from microbes that lived off the nutrients in the Neanderthal remains, as well as contamination from humans handling the specimens. However, the scientists performed a variety of studies to confirm that the vast majority of the human-like sequence in the library...

Friendly bacteria in alcoholic milkshake could fight food allergies

...n human tears. Lactoperoxidase can attack and kill microbes such as 'flu viruses and the bacteria responsible for MRSA. The system could be used to sanitize the air in airplanes and hospital sick bays. ...

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