X-ray images help explain limits to insect body size
...g insects can be. The research provides a specific explanation for what limits size in beetles: the constriction leading to the legs. A collaborative team of researchers from Argonne's Advanced Photon Source (APS), Midwestern University and Arizona State University wanted to study how beetles' tracheal systems...Sugar and spice and everything nice: Health differences in newborn girls and boys
...ty to injury during ischemia and offer a potential explanation for the poorer clinical outcomes found in infant f... researcher, "These findings may offer a potential explanation for pediatric studies reporting worse outcome of recipients receiving livers from female donors."...Universe's stringy birth revealed by young Czech scientist in EURYI winning project
...ation of a vacuum state, and the other is a common explanation for all sub-atomic particles. Czech physicist Dr. Martin Schnabl has been selected to receive a EURYI Award by the European science Foundation (ESF) and the European Heads of Research Councils (EuroHORCS) to help him pursue his project and build on ......f DNA. "In terms of physics, there's no obvious explanation for this observation," says Costes. "In terms of biology, we have some pretty good guesses." What's evident is that the organization of the cell nucleus plays an important role in response to DNA damage. The high-density regions likely are heteroc...Call for EU to launch major project to map out all our proteins
...planations for this apparent anomaly. The simplest explanation is simply a lack of sensitivity of proteomics meth...increasing sensitivity of proteomics methods, this explanation is increasingly unlikely. Another possibility is that there are not as many coding genes as had be...Prenatal alcohol exposure alters brain activity in the frontal-striatal areas
...ured via fMRI, is still under study. One possible explanation is that the increase in prefrontal cortical activation means that the alcohol-exposed youth need to devote more cortical resources than their typically developing peers to complete the task. Another possibility is that the connectivity - [meaning] h...Detecting transmissibility of avian influenza virus in human households
... human-to-human transmission is indeed a plausible explanation for the Dutch infection data. Based on the estimates of the within-household transmission, van Boven et al. concluded that less than half of the household infections could have been prevented with current antiviral drugs. It is important to continu...Did pterosaurs feed by skimming?
... unimportant cost of flight, offering, in turn, an explanation for the relative rarity of the skim-feeding strategy; found only in three modern birds, all of the same genus, Rhynchops. The pterosaurs are an impressive group, with some stunning animals with wing spans over 12 meters across. The group represents...Effects of aging in stem cells
... aging, chromatin dysregulation provides a logical explanation for the numerous and diverse age-related changes observed at the molecular, cellular, and organismal levels. Over the normal course of aging, chromatin dysregulation leads to dysregulation of many genes, which in turn leads to a loss of normal cellul...MIT IDs link between brain tumor proteins
...and EGFRvIII in GBM. This discovery could offer an explanation for why GBM tumors are so invasive, because over-activated c-Met has already been implicated in very invasive types of lung and breast cancers. The researchers dont know yet how EGFRvIII is activating c-Met, and whether other proteins are involved ...Study finds hereditary link to premenstrual depression
...ver thecourse of the menstrual cycle, until now an explanation for the susceptibility to hormone-related mood changes has been elusive. "Our initial hope in the study was that by looking at steroid-related genes like those for receptors for steroid hormones such as estrogen, we would be able to find gene differe...The origin of perennial water-ice at the South Pole of Mars
...t glacial activity. However, only now a realistic explanation for the age of the deposits and the mechanism of their formation could finally be suggested. This was achieved thanks to the OMEGA mapping and characterisation of these ice deposits, combined with the computer-generated Martian Global Climate Models ...Researchers witness natural selection at work in dramatic comeback of male butterflies
...they could rule out a change in the bacteria as an explanation for the resurgence of the males in the butterfly populations studied. ...Gene variations directly link inflammation to an increased risk for lung cancer
...ncers, including lung cancer, and could provide an explanation how damage to lung tissue leads to cancer, Engels said. Knowing more about the downstream effects of these polymorphisms, and discovering others like them, will increase our understanding of how some people are predisposed to developing cancer. To...Risk-taking in infertility treatment correlates with women's negative moods
...o rated their choices as more risky. One possible explanation is that negative moods lead women to knowingly make more risky choices. In a follow up study, Dr. Newton and his team plan to determine whether providing women with accurate risk information will influence their decisions about how many embryos to...Generalized reciprocity in rats
...can be found in non human animals, an evolutionary explanation would be far more likely. In this study, Norway rats received help gaining food from a partner who pulled a stick to produce the food. Rats could therefore be grouped into two classes: those that had previously received help and those that had not....JCI Table of Contents -- July 2, 2007
... seen inanemia. Second, they provide a mechanistic explanation for the role of HJV in iron overload disease. TITLE: Modulation of bone morphogenetic protein signaling in vivo regulates systemic iron balance AUTHOR CONTACT: Jodie L. Babitt Harvard Medical School, Boston, Massachusetts, USA. Phone: (617)...Support for chromosomal theory of cancer found in cancers' development of drug resistance
... the expression of thousands of genes, is a better explanation for the cause of breast cancer than is the mutation theory. "They see now, more and more, that aneuploidy cannot be ignored. It is a big elephant compared to their little mutations," he said. Also, the more often a cancer changes karyotypes as it...Gut check: Tracking the ecosystem within us
...acteria ebbed and flowed. "We don't have a good explanation for why one big group of bacteria would replace another. And it's not that the number of bacteria dropped," Palmer explained. "The size of the population was relatively stable." Over time, however, the composition of the intestinal microbial commu...Omega-3 fatty acids protect eyes against retinopathy, study finds
...rtant because they provide a reasonable biological explanation for findings from a number of human studies on diet and retinal disease, and they identify low-cost and widely available nutrient-based treatment approaches that may show merit in future research on diseases that damage retinal blood vessels and ner...