Tag: "living" at biology news
A 'private bandwidth' for communication in bats: Evidence from insular horseshoe bats
...ncy, spacing them out more than their conspecifics living
in peninsular Italy (i.e. on the mainland). Why" T...nces, so gene flow may operate between populations living
in sympatry (i.e. occurring in the same areas) and allopatry (living in separate areas) with R. mehe...
American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...estion of whether these nanomaterials are toxic to living
cells or organisms has not been fully answered, the researchers explain. The scientists used laboratory tests on human lung cells to show that luminescent silica nanoparticles did not damage cellular DNA. Our study indicates that the luminescent si...
Pollution causes 40 percent of deaths worldwide, study finds
...on kills about 3 million people a year. Unsanitary living
conditions account for more than 5 million deaths each year, of which more than half are children. Air pollution from smoke and various chemicals kills 3 million people a year. In the United States alone about 3 million tons of toxic chemicals ar...
MIT creates 3-D images of living cell
...owed scientists to create the first 3D images of a living
cell, using a method similar to the X-ray CT scans... most detailed images yet of what goes on inside a living
cell without the help of fluorescent markers or other externally added contrast agents, said Michael...
X-ray images help explain limits to insect body size
...f they could predict the largest size of currently living
beetles. The head data predicted an unrealisticall...beetle that nicely matches the size of the largest living
beetle, Titaneus giganteus . This study is a first step toward understanding what controls body si...
New, more direct pathways from outside the cell-to-cell nuclei discovered
...croscope. "I am a patient and constant observer of living
things," he says. "And I watch them all the time with no agenda in mind. Some people are window gazers. They stand in front of the window and just look. I do the same with cells." During one of Gavin's agenda-less cell-watching sessions, he noticed...
New textbook illuminates the close links between evolutionary and molecular biology
...tionary biology underpins all our knowledge of the living
world, write the authors. [It] is a synthesis of Darwinian natural selection and Mendelian genetics. It allows us to ask not just how life evolved, but why it is as it is: Why do organisms develop from a single cell? Why is the genetic code as it...
OHSU turns mouse into factory for human liver cells
... are bad, low quality." And human liver cells from living
sources are difficult to expand in laboratory tissue cultures. In the last decade, scientists have studied whether mice could be genetically engineered and bred to grow human liver cells. Early results since 2004 showed it could be done, but the m...
An early ape shows its hand
...r that the fossil may be from a direct ancestor of living
great apes (especially the orangutan), Dr. C. Owen Lovejoy, Kent State University Professor of Anthropology, suggests another possibility in his comment on the article published in the same issue. A preeminent biological anthropologist in the study...
Inflammation may cause preterm labor and fetal deaths
...if receptors responding to the presence of dead or living
bacteria in the placentas of mice can be blocked, ...ceptors (TLR) that sense the surface components of living
or dead bacteria. TLR2 and 4 are key receptors in recognizing bacterial surfaces. The investigator...
Bacteria may not hasten death
... In both flies and humans, the number of bacteria living
on the organism increases with age. The innate immune response to bacteria is similar in flies and humans, and it loses strength with age in both species. The study suggests that all these factors may have nothing to do with aging. I think a lot ...
Indo-Pacific coral reefs disappearing more rapidly than expected
...over, a measure of the ocean floor area covered by living
corals. Scientists rely on coral cover as a key indicator of reef habitat quality and quantity, similar to measuring an area covered by tree canopy as a gauge of tropical forest loss. Coral cover declined from 40 percent in the early 1980s to appro...
UCF research links proteins, stem cells and potential Alzheimer's treatment
...demy of Sciences). There are 5 million Americans living
with Alzheimers, one of the most common forms of dementia, according to the National Alzheimers Association. Thats why finding treatments has become so important to many scientists. Its very exciting, Sugaya said. If our success with mice can trans...
Genetic analysis finds greater threat in frog-killing fungus
... fungus is endemic. One would guess that the frogs living
where the ancestral population of this fungus is located would not be affected that badly. We could then try to determine the mechanisms those frogs use to resist the pathogen." The study also found that the sites near Tioga Pass Road contained two...
In a first, Einstein scientists discover the dynamics of transcription in living mammalian cells
...ze the transcription process, the researchers used living
mammalian cells, each of which contained 200 copies of an artificial gene that they had inserted into one of the cells chromosomes. Then, by attaching fluorescent tags to RNA polymerase II, they were able to closely monitor all three phases of the tr...
Why nectar-feeding bats need a 'power drink' to fly
... central America and are among the smallest of all living
mammals, weighing less than 10g. They feed at night and can ingest up to 150% of their body weight as nectar. ...
Space-borne sensors help Africa tackle water shortage problems
...tal country population of nearly 11 million people living
in urban areas, according to the United Nations Human Settlement Programme. The rate of urbanisation has been unprecedented and has therefore exceeded the rate of infrastructure development and service provision, such as water supply and sanitation. ...
Forecasting system provides flood warnings to vulnerable residents of Bangladesh
...day forecasts directly to more than 100,000 people living
on floodplains of the Brahmaputra and Ganges river...aputra and Ganges, including impoverished families living
on islands known as river chars. The center's Ramasamy Selvaraju and A.R. Subbiah are overseeing the...
Unlocking proteins from their cellular shell
...s for almost every biologic action and reaction in living
things. Their assembly and reactions are the foundation of processes from the division of cells to the complex chain of events that result in the apparently simple blink of an eye. Pathophysiological processes such as heart disease, anemia, and eve...
Coelacanth fossil sheds light on fin-to-limb evolution
...ely resembles the pattern in the fins of primitive living
ray-finned fishes, according to the scientists. ... we shouldnt be looking at the fins of our nearest living
fish relativeslungfishes and coelacanthsbecause theyre far too specialized, Coates said. Part of t...
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