Caribbean frogs started with a single, ancient voyage on a raft from South America
...rivers during storms and caught in ocean currents, can be more than a mile across and could include plants that trap fresh water and insect food for frogs," Hedges said. It is not likely that the frog species dispersed simply by swimming because frogs dry easily and are not very tolerant of salt water. ...New bacterium discovered -- related to cause of trench fever
...r to malaria or typhoid fever, two infections that can occur in returning travelers. But genetic detec...new discovery is the sixth species identified that can infect humans, said Jane Koehler, MD, professor of infectious diseases at UCSF and senior author on ...Study shows big power of small RNAs, not just proteins, in halting cancer
... research laboratories has not only found that p53 can arrest the growth and even eradicate cancers, but we’ve revealed something very surprising about what makes this pathway so powerful,” said Hannon. CSHL research published by Nature earlier this year, concluded that even in the latest stages of cance...Studies to find better ways to preserve human eggs, ovarian tissue under way
...igned to kill rapidly spreading cancer cells, also can destroy dynamic reproductive tissue. “I don’t ...man egg or ovarian tissue, resulting ice formation can be destructive. “Ice crystals break up your inside organelles. That is what hurts eggs, which are ve...In mice, drug protects against diabetes and atherosclerosis
...n that the experimental compound or others like it can be developed into successful drugs for humans, Hot...ote in their report, is the demonstration that aP2 can be blocked by a small-molecule, oral compound. In turn, they add, the results suggest that targeting...Longer treatment benefits sleep apnea patients
...though individual patient response to CPAP therapy can vary, these latest findings provide a yardstick to help clinicians assess whether a patient's use is optimal....Brain holds clues to bipolar disorder
...ps also will present data illustrating how imaging can be used to identify biomarkers and how these markers can help clinicians determine which patients will respond best to certain treatments. Neuroimaging also ...Ancient DNA traces the woolly mammoth's disappearance
...hose that occurred in the geologically recent past can provide many insights,” Lister said. “Our work, to...f others, shows that the conditions for extinction can be set up long before the actual extinction event.”...New study finds genetically engineered crops could play a role in sustainable agriculture
...es the plant to produce an insecticide internally, can have an environmental benefit because large-scale insecticide spraying can be avoided. Organisms such as ladybird beetles, earthworms, and bees in locales with “Bt crops” fare...Newly found sensing system enables certain bacteria to resist human immune defenses
...rvival mechanism in a common type of bacteria that can cause illness. The mechanism lets the bacteria pro...bout how gram-positive bacteria—such as those that can lead to food poisoning, skin disorders and toxic shock—avoid being killed by AMPs. AMPs are made by ...Brightening prospects of using fluorescent nanotubes in medical applications
...cal Society on June 7, they describe a method that can successfully produce large batches of highly fluor...s in the process. The VINSE team reports that they can produce populations containing trillions of nanotubes with a quantum efficiency of 1 percent, a fact...Research shows cord blood comparable to matched bone marrow
...ce is a great advantage. Today, leukemia patients can wait months for an appropriately matched bone marr...“For the first time, the timing of transplantation can be dictated by the patient’s needs as opposed to the availability of the matched bone marrow.” ...Salty oceans provide early warning for climate change
...heir results reveal that a build up of salty water can stimulate deep water circulation, while a diluting of the waters is linked to sluggish flow. “Salt plays a far more important role that we first thought,” says Professor Rainer Zahn, a palaeoclimatologist at the Autonomous University of Barcelona in ...New collaborative research reveals chimpanzees can sustain multiple-tradition cultures
...laborative work of the last five years, showing we can artificially introduce cultures in chimpanzees, wh...al. “We are the first to show cultures potentially can jump from group to group if you offer chimpanzees the opportunity to watch other groups. It’s a bit ...Dual-imaging technique useful before -- and during -- brain surgery
...wo high-tech imaging tools into the operating room can improve the functional abilities of patients who u...head and how the surgery will be conducted. “We can essentially show patients a color-coded picture of their brain and explain to them where their tumor...Alzheimer's disease to quadruple worldwide by 2050
...wide will have Alzheimer’s disease. However, if we can make even modest advances in preventing Alzheimer’s disease or delay its progression, we could have a huge global public health impact.” According to Brookmeyer and his co-authors, interventions that could delay the onset of Alzheimer’s disease by...Stroke study sheds light on left-right brain divide
...that suffering a stroke in the left frontal region can affect aspects of speech and language, but this research highlights, for the first time, the additional challenges that people with right frontal-lobe damage might face in everyday life.’ 23 people, each with frontal lobe damage, performed a ‘rule...Breakthrough developments in rheumatoid arthritis reported
...are associated with the inflammatory condition and can be used to understand the triggers of the disease. This will provide key insights into the pathways underlying rheumatoid arthritis and other autoimmune diseases. It may ultimately provide tests to predict who will respond to the available new treat...'Lucky 13' as new gene discovery offers further hope for childhood blindness
...or cause of inherited blindness. In that sense, we can consider this a 'lucky thirteenth' as we are build...ormally and about a new and common way in which it can go wrong. Given some exciting recent developments on testing possible cures for inherited blindness,......osomes result and severe diseases including cancer can arise. But so far we know only little about conden...on of chromosomes towards the end of cell division can also serve as a safety net if something goes wrong with chromosome separation in earlier phases of d...