A 'private bandwidth' for communication in bats: Evidence from insular horseshoe bats
...ular Italy (i.e. on the mainland). Why" The reason may be the presence of a third species, the Mehelys ho...onfusion. The authors of the study suggest this may be a special case of character displacement. The maintenance of a 'private bandwidth' for communicat...American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...ssPac information for stocks or securities dealing may be guilty of insider trading under the federal Sec...s) used in millions of cataract surgery procedures may prevent a common complication of cataract surgery, according to a report scheduled for the Aug. 13 i...Study begins to reveal clues to the cause and progression of sepsis
...those that act more broadly on multiple components may yield better results. No one really knows why some people develop sepsis following an infection, said Scott Somers, Ph.D., who oversees sepsis grants at the National Institute of General Medical Sciences, which partially funded the work. This larg...Multinational research: protecting ecology means understanding people, too
...the Amazon for a field course. Doctoral candidates may approach research from a variety of academic disciplines. We want to produce a social scientist who can talk effectively with a biologist about whats going on in that system and vice versa, Stronza said. We hope that the PhD.s who emerge from the pr...Climate change isolates Rocky Mountain butterflies
...roups of alpine butterflies from each other, which may lead to the extinction of the colourful insects in...d. One particularly cold winter or summer season may be enough to wipe out an entire meadow of Parnassius, said Roland, who is the lead author of a paper...Clones on task serve greater good, evolutionary study shows
...ce that a well known plant development gene ERECTA may be in part responsible for some of the change in some genotypes. However, Dworkin said this conclusion requires further study....Diverse genetic abnormalities lead to NF-κB activation in multiple myeloma
Two new studies may lead to the development of more effective therapies for individuals with multiple myeloma (MM), a common and incurable blood cell cancer. The research, published by Cell Press in the August issue of the journal Cancer Cell, provides new insight into ......y unknown function of this receptor and suggest it may be a novel therapeutic target in the treatment of this devastating cancer. ...Which came first, the moth or the cactus?
... traditional theory, suggesting that one mutualist may exert some control over the other's population increases, such that neither unbounded growth nor overexploitation ensue. "I have always been interested in the community ecology of mutualism -- the larger puzzle -- and this moth-cactus relationship ...Interaction of just 2 genes governs coloration patterns in mice
...ion. There's reason to believe this simple pathway may be evolutionarily conserved across mammals that display lighter bellies and darker backs, from mice to tuxedo cats to German Shepherds." Hoekstra and co-authors Cynthia C. Steiner at UCSD and Jesse Weber at Harvard studied Peromyscus, a mouse that ...Bursts of waves drive immune system 'soldiers' toward invaders
...rch also drive cancer cell metastasis, the finding may lead to strategies to block cancer growth. Similarly, faulty regulation of white blood cell movement plays a role in heart attack - another promising target for applying the new insights of the regulation of cell movement, the authors say. White b...Protein 'chatter' linked to cancer activation
...er cells induces shortening of chromosome ends and may restrict their potential to grow. Zhu says that the discovery will help researchers understand the onset and progression of these diseases as well as help them find a cure for cancer. ...Features of replication suggest viruses have common themes, vulnerabilities
...rtant because it reveals a common viral theme that may be vulnerable to disruption and could lead to the development of drugs to treat many different kinds of viral infections, much like antibiotics are used to attack different kinds of bacterial pathogens. "It turns out that viruses previously thought...Doernbecher Children's Hospital scientist earns coveted Javits award
...However, our recent studies suggest that this view may not becorrect." Back and Lawrence Sherman, Ph.D., an associate scientist in the OHSUOregon National Primate Research Center, have discovered that afteradult white matter damage, numerous oligo-cells survive, but fail tomature to make myelin. This a...Gene regulation, not just genes, is what sets humans apart
...s for breaking down more complex carbohydrates. It may be that parts of the human metabolism are cranked ...essential chemistry of metabolism, Wray said. This may set the stage for a more focused analysis of the human diet. Much is being written and hypothesize...Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless
...detoxification enzymes in humans, Chow said. There may be other mechanism in play by which green tea may protect against cancer development, but this is a good place to start....Does the desire to consume alcohol and tobacco come from our genetic makeup?
...t because the excessive use of alcohol and tobacco may cause cardiovascular disorders like hypertension, ...enomic determinants behind alcohol and tobacco use may point to novel mechanisms for blood pressure modification by these substances.) The volunteers were ...High blood pressure, low energy -- a recipe for heart failure
...ls that impaired energy production in heart muscle may underlie heart failure in some hypertensive patients. The researchers assert that a molecular factor involved in maintaining the heart's energy supply could become a key to new approaches to prevent or treat heart failure. The molecular factor, a pr...X-ray images help explain limits to insect body size
...and to the legs. They reasoned that these orifices may be bottlenecks for tracheal tubes, limiting how much oxygen can be delivered to the extremities. We were surprised to find that the effect is most pronounced in the orifices leading to the legs, where more and more of the space is taken up by trach...New, more direct pathways from outside the cell-to-cell nuclei discovered
...iological world." Therefore, these direct pathways may operate in other organisms as well. The discover...alized membrane move to the nucleus. "Biologists may now study the kinds of external molecules that can gain entry to the nucleus through these newly def...