Tag: "scientists" at biology news
Ancient creature fossilized by the bacteria that ate it
...ce of a completely different kind of bacteria that scientists
were unsure even existed as fossils that long ago.... of clumps of even tinier bacteria fossils. The scientists
suspect that the bacteria feasted on the dead arthropods, then absorbed minerals from their surround...
Gene exchange between species is aided by parasitism
...University of Michigan and Smithsonian Institution scientists
in the July 30 issue of Science that showed the op...ld have traveled between parasite and host, the IU scientists
say. As part of their parasitism, dodder cells penetrate the cells of their hosts, making it possibl...
New gene target found for common brain tumors in children
... he added. In their study, the Johns Hopkins scientists
compared levels of a protein marker for Notch2 gene activity to the survival of 35 medulloblastoma patients. Of 11 patients with high levels, seven died. Of 24 patients with no detectable protein, only six died. Standard surgery and radiation...
Declining fish supply linked to wildlife consumption in West Africa, Science study reports
... (FAO). The declines in per capita fish supply the scientists
cite are largely caused by increases in human popu...es and the bushmeat trade," said Brashares. While scientists
had previously considered this possibility, there were no clear data linking fish supply to terrestr...
Joslin and Stanford researchers find key clues to muscle regeneration
...ls regenerate -- leading to powerful tools to help scientists
better understand diseases such as muscular dystrophy. Skeletal muscle contains a complex array of cell types. Among its principal components are multi-nucleated muscle fibers and muscle satellite cells -- cells located in close association with mu...
Extinction in ocean's mud presages key ecological changes
...nt on the floors of the world's oceans - is giving scientists
a new look ahead at the consequences of the steady...) in the journal Science, an international team of scientists
describe work in which the ocean mud and the many animals that live there are used to forecast how t...
Rethinking new therapies for Crohn's disease at U.Va.
...e in inflammation- may be involved in Crohn's than scientists
had previously thought. He believes that a growing body of evidence shows that both type 1 and type 2 helper T-cells are likely involved in the early stages of Crohn's disease. The classic paradigm held that cytokines secreted by type 1 T-cells, such...
Duchenne Muscular Dystrophy research focuses on early mechanisms
...ulture and Life Sciences, who will lead a group of scientists
from several universities. Working on the project are Jay Williams, professor of human nutrition, foods, and exercise at Virginia Tech; David Thomas, professor and head, division of structural biology and biophysics, and Dawn Lowe, assistant professo...
By impounding iron, FHC foils cell suicide, fuels inflammation
...In the 12 Nov. 2004 issue of the journal Cell, the scientists
show that a key step in the process of preventing cell suicide is the induction of ferritin heavy chain (FHC), a protein that collects and hoards iron. By sequestering iron -- which cells with suicidal tendencies need to make the harmful substances ...
Automated scans let scientists track drugs' broad effects on cells
...n unprecedented level of automation to microscopy, scientists
at Harvard University have developed a powerful ne...." High-throughput cytological profiling lets scientists
test numerous variables at once, wringing countless discrete cellular measurements from a single exp...
Tropical birds sensitive to environmental cues that can be impacted by global warming
...ong-control system have been demonstrated by other scientists
in all northern latitude species that have been in...e environmental cue is different," Moore said. The scientists
wanted to determine whether "seasonal changes in brain structure can be mediated by local environmen...
Avian cholera could spread from Great Salt Lake
...inter, the agency announced today. Last week, USGS scientists
isolated Pasteurella multocida, the bacterium that...ional Wildlife Health Center in Madison, Wis. USGS scientists
are working with Utah biologists to monitor the situation. "We haven't observed significant avian c...
NIEHS to develop new RNAi library to help fight disease
...es. RNAi technology "turns off" specific genes so scientists
can learn more about how the genes influence the c...ll. Knowing how a gene responds to a stress allows scientists
to gain a more comprehensive understanding of how chemicals and toxins can undermine our health. "Th...
Academy eBriefings offer comprehensive reports on more than 100 cutting-edge scientific issues
... of chemical biology in developing new drugs. How scientists
are accelerating the development of an AIDS vaccin...and New Media, notes that "Instead of reaching 100 scientists
at a single event, we're now reaching thousands. Conveying the information through science journalis...
Scientists advocate genomic sequencing of 'living fossil'
...ww.genomesonline.org ). These efforts will enable scientists
to perform detailed comparisons of the complete genetic codes from multiple species, identifying the sequence changes that contributed to evolutionary adaptation and speciation. Although a wide assortment of species have been chosen for sequencing, ...
UCLA scientists uncork fountain of youth for HIV-fighting cells
have shown that a protein called telomerase preven...emble those of a healthy 90-year-old person." Most scientists
agree that telomeres evolved to avert the rampant cell growth that often leads to cancer. Yet many ...
Sperm enzyme is essential for male fertility, study shows
(Embargoed) CHAPEL HILL -- A study led by scientists
at the University of North Carolina at Chapel Hill...urnal's print edition. Collaborating with UNC were scientists
from the U.S. National Institute of Environmental Health Sciences (NIEHS); Fudan University in Shang...
New tool highlights activity of key cellular signal
...st a handful of proteins to pass on many messages, scientists
have had a hard time figuring out how it can trigg...ich had not been directly observed. And while some scientists
had suggested cyclic AMP could get into the mitochondria, our studies are the first to show that it'...
Discovery reveals how the body regulates blood oxygen
...en delivery when and where it is needed most." The scientists
have identified an oxygen-sensing protein, which i...lear exactly how these channels sense oxygen." The scientists
discovered that the oxygen-sensing molecule is the enzyme "hemoxygenase-2". Under normal conditions,...
New HIV co-factor found
...g to understand how a natural HIV inhibitor works, scientists
have discovered that a protein on immune cells promotes HIV infection. Ma and colleagues, reporting in the November 15 issue of The Journal of Experimental Medicine , say that this insight could lead to new approaches for inhibiting infection as HI...
1 2 3 4 5 6 7 8 9 10