Tag: "has" at biology news
A 'private bandwidth' for communication in bats: Evidence from insular horseshoe bats
...lophid species show different frequency values. It has
been proposed that such differences are large enough to allow recognition of conspecifics. The study proved that in Sardinia, Mediterranean (Rhinolophus euryale) and lesser (R.. hipposideros) horseshoe bats show divergence in call frequency, spaci...
American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...nomaterials 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 silica nanoparticle is a ...
NIH gives $8M to University of Pittsburgh School of Medicine for myositis research
...n to reduce the number of blood B cells. This drug has
been used in other research studies in patients with other rheumatologic and autoimmune diseases. ...
Facial attraction -- choice of sexual partner shaped the human face
... ancestors have shown our choice of sexual partner has
shaped the human face. The findings appear in the ... their eyebrows. The shorter and broader male face has
also evolved alongside and the canine teeth have shrunk, so men look less threatening to competitors...
Multinational research: protecting ecology means understanding people, too
...y Dr. Lee Fitzgerald, a conservation biologist who has
traveled through Latin America for 20 years study... Dr. Amanda Stronza, a cultural anthropologist who has
for 15 years studied ecotourism and indigenous peoples in the Amazon. Fitzgerald and Stronza now wi...
Climate change isolates Rocky Mountain butterflies
...ontrolled fires) in order to manage forest growth, has
created the tenuous condition for the alpine butte...ut are rare outside of them, Roland said. Roland has
completed earlier studies that showed expanding forests are restricting Parnassius's movements in pa...
Beyond batteries: Storing power in a sheet of paper
...ies are inexpensive, Murugesan said, but the team has
not yet developed a way to inexpensively mass prod... different applications. The team of researchers has
already filed a patent protecting the invention. They are now working on ways to boost the efficienc...
New study warns limited carbon market puts 20 percent of tropical forest at risk
...n the same situation. For example, although Brazil has
four other major ecosystems, the Brazilian Amazon faces a similar circumstance as HFLD countries. According to the study, preventive credits for HFLD countries at a conservative carbon price of U.S. $10 per ton would be worth hundreds of millions ...
Unravelling new complexity in the genome
...plicing. Blencowe believes that the data his group has
generated provides a valuable basis for understand...ral fellow working jointly with Blencowe and Frey, has
provided what is likely part of the answer. By applying computational methods to the gene chip data ...
Diverse genetic abnormalities lead to NF-κB activation in multiple myeloma
...tutive activation of NF-κB to block apoptosis has
been implicated in various types of cancer, but the molecular mechanisms involved are not well understood. Two separate research groups used a variety of sophisticated genomic techniques to examine mutations in hundreds of MM patient samples and cell...
Pollution causes 40 percent of deaths worldwide, study finds
...uman diseases, which the World Health Organization has
recently reported. Both factors contribute to the malnourishment and disease susceptibility of 3.7 billion people, he says. David Pimentel, Cornell professor of ecology and agricultural sciences, and a team of Cornell graduate students examined data ...
Which came first, the moth or the cactus?
...he senita moth-senita cactus mutualism in 1995 and has
studied it ever since. The problem is that the moths lay their eggs inside the cacti's flowers immediately after pollination, and when the eggs hatch the moth larvae eat the fruit, destroying the flowers' chances to produce seeds. Historic theory p...
Interaction of just 2 genes governs coloration patterns in mice
...lude owls, herons, and hawks." Previous research has
shown that such predators, all of which hunt by sight, will preferentially catch darker mice on the white sand beaches, providing a powerful opportunity for natural selection to evolve increased camouflage. Through a detailed genomic analysis, Hoek...
Bursts of waves drive immune system 'soldiers' toward invaders
... interaction to generate the self-sustaining waves has
now been revealed. "Seeing the wavelike dynami...ction; it also appears to eliminate the Hem-1 that has
assembled it, the new research shows. The scientists think that this cycle of Hem-1 propulsion and a...
Features of replication suggest viruses have common themes, vulnerabilities
... and defense mechanisms of the host. " The virus has
developed a very elegant strategy," says Ahlquist. "It creates for itself a new compartment for RNA synthesis, where it can collect its (constituent) components, organize successive steps of replication, and sequester these steps from other processes...
Newly created cancer stem cells could aid breast cancer research
...s. Now the lab of Whitehead Member Robert Weinberg has
created such cells in a Petri dish by isolating an...issues. Over the past decades, considerable effort has
gone into discovering these tumor-initiating and metastasis-initiating genetic alterations. The ne...
Doernbecher Children's Hospital scientist earns coveted Javits award
...nction. Progress in preventing this brain injury has
been slow, Back says,because of the lack of animal... damage that occur in premature infants. Thismodel has
substantially altered the way leaders in this field believedamage occurs to the developing white mat...
Gene regulation, not just genes, is what sets humans apart
...ival and reproduction spread throughout a species, has
targeted the regulation of many genes known to be ...esus macaque, a more distant primate relative that has
88 percent the same genes as humans. These regulatory stretches of DNA are where proteins bind to th...
MIT creates 3-D images of living cell
...DGE, MA - A new imaging technique developed at MIT has
allowed scientists to create the first 3D images o...y and a professor of physics. Accomplishing this has
been my dream, and a goal of our laboratory, for several years, said Feld, senior author of the pape...
Risk of common vaginal infection linked to preterm birth appears higher for blacks
... and Gynecology in Boston. When a pregnant woman has
bacterial vaginosis, her risk of preterm birth goes up, said Hyagriv Simhan, M.D., M.S.C.R., assistant professor of obstetrics, gynecology and reproductive sciences at the University of Pittsburgh School of Medicine. And now we can say that gauging r...
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