Tag: "revealed" at biology news
Diatom genome reveals key role in biosphere's carbon cycle
...er, depending on ocean conditions. The genome work revealed
that the diatom Thalassiosira pseudonana has the g...ons, also considered the evolutionary implications revealed
by the genomic work. The research provided direct genetic confirmation of a hypothesis that diatoms ...
New therapy for specific form of leukemia
...o T-ALL. With these findings, the researchers have revealed
a new mechanism for the formation of active cancer genes on circular DNA fragments. The researchers are now concentrating their efforts on discovering the role of ABL1 and other kinases in all T-ALL patients. In the future, they hope to be able to a...
Old bones unearth new date for giant deer's last stand
...tion into extinctions caused by climate change has revealed
that the giant deer, previously thought to have be...ent bones and teeth which, when radiocarbon dated, revealed
that the Eurasian giant deer survived to 7,000 years ago, much later than previously thought. Giant...
Drought in the West linked to warmer temperatures
...arth Observatory's tree ring laboratory. The study revealed
that a 400-year-long period of elevated aridity and epic drought occurred in what is now the western U.S. during the period A.D. 900-1300. This corresponds broadly to the so-called "Medieval Warm Period," a time in which a variety of paleoclimate rec...
Effort to control trade in great white sharks gets teeth from international community
...ter. Since then, field studies on the species have revealed
that the great white shark is rarely a man-eater. Most attacks occur when great whites confuse humans with their preferred prey--sea lions, seals and other marine mammals. In fact, great white sharks, along with many other shark species, are now thou...
Where in the brain decisions are made
...monkeys played the game under different parameters revealed
that the monkeys were, indeed, making subjective decisions about which target to look at. And, the researchers found, the electrical activity of neurons in the lateral intraparietal region did indicate that it was involved in making those decisions. ...
Flies have morning and evening clocks
...ions affected the flies' activity. The experiments revealed
that the PDF-expressing ventral lateral neurons govern the morning activity peak; while another group of neurons, including the dorsal lateral neurons, governs the evening activity peak. In additional experiments, the researchers selectively disrupt...
Time-lapse movies show brain cells move like a two-stroke engine
...moves," says Hatten, whose time-lapse movies first revealed
this motion in 1987. With each step the cells trav... with a spinning disk confocal microscope, the dye revealed
a cage-like structure around the cell's nucleus. "Its like a bingo cage," says Hatten. "It holds the...
Muscling in on a deadly cancer
...onal mutagenesis." Capecchi says these experiments revealed
how the fusion gene turns various genes on or off, interfering with normal muscle development and providing clues to the complex series of steps by which the gene causes alveolar rhabdomyosarcoma. "If you know the steps involved, then ...
A new culprit in depression?
...other genetic technique called PCR analysis, which revealed
that the most significant differences were in levels of mRNA for one of the FGFs, called FGF1, and for the two receptors, FGFR2 and FGFR3. The researchers emphasize that they do not yet know whether the depressed people were born with lower levels ...
Pushing the envelope to overcome HIV drug resistance
...the University of Massachusetts Medical School has revealed
a common structural theme in protease inhibitor resistance. By comparing the structures of several substrate-protease complexes, they establish a "substrate envelope" to define the three-dimensional shape that is shared by all the substrates as they ...
Scientists identify new cause of obesity
...PhD, assistant professor of medicine at UCSF, have revealed
that mutations that impair MC4R's response to the signals are the most common genetic cause of severe obesity. The protein has become a prime target in efforts to develop drugs to combat obesity. But the new research at UCSF and the UCSF-affiliated G...
Study confirms link between head and neck cancer and common Asian nut
... diagnosis and by birth cohort. Data revealed
that for head and neck cancers, the relative risk for men who were born in the 1972-1980 cohort is 45.67 compared with men born in 1932-1940, indicating a strong cohort effect. By contrast, the relative risk is 0.69 for nasopharyngeal carcinoma. A ...
An old adage about apples finds scientific backing
...ular diet. Dr. Raul said these experiments revealed
a previously unknown way in which polyphenol polymers (procyanidins) worked to destroy cancer cells, suggesting such knowledge might be used to one day combat specific tumor growth, such as colon cancer. "For now, our work suggests that ea...
To save dolphin's dorsal fin experts combine medical technology and teamwork
...ge the skin of dolphins or humans. Thermal imagery revealed
patterns of increased vascular development in Liko's dorsal fin and more rapid healing following application of localized LED therapy. Human cosmetic surgeon Dr. Faringer performed the initial procedure in July that prepped Liko's wound for the seque...
Gene-altered mouse is model for rare autoimmune syndrome
..., that previous studies in Zhuang's laboratory had revealed
to be key to the development of lymphocytes. ...hers' experiments with the Id3-deficient mice also revealed
that T cells play a dominant and essential role in generating the pathology of the disorder. ...
International human genome sequencing consortium describes finished human genome sequence
...great apes about 5 million years ago. The analysis revealed
that 27 of the pseudogenes were non-functional in both humans and chimps. However, five of the genes that were inactive in humans were found to be still functional in chimpanzees. "The identification of these pseudogenes and their functional counterp...
Clues to improving TB treatment
... to the atomic level. The crystal structure revealed
that EthR was bound to an unexpected partner--a compound called HexOc. The presence of HexOc alters EthR's structure, opening up a wider gap between two key DNA recognition areas on the protein. The wider gap disrupts EthR's ability to bind to DNA an...
Single genetic defect links many risk factors for heart disease and stroke
... had the same problem. Further study of the family revealed
a high frequency of high blood pressure and choles...ing of the mitochondrial genomes of family members revealed
a specific mutation in all affected people. That defect was the substitution of a single DNA unit, o...
Deciphering an autism mystery
.... In four other subregions of the IO, the labeling revealed
no difference between autistic and control brains....s activity after a sound is presented. The studies revealed
a "flattened" brain response to sound in autistic children. "The children with autism had a much sma...
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