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Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development

...ep isn't necessary for development and raising the question of whether humans and other mammals have untapped physiological potential for coping without sleep." Researchers observed two adult female killer whales and their calves at Shamu Stadium at SeaWorld San Diego and four dolphins and their calves house...

Understanding how bacteria communicate may help scientists prevent disease

...he amount of nutrients in the environment. Another question is why are there multiple RNAs? The sensing and co...als from multiple inputs," Kulkarni said. A third question is how the circuit regulates important biological processes, such as biofilm formation and virulence...

U of T researchers map role of Epstein-Barr virus in cancer

...timulate cell proliferation do it through p53. The question was why this one didn't. What our research shows is that EBNA1 does actually impact on the p53 protein; it just does it in a different way than other viruses do." Frappier, a Canada Research Chair in Molecular Virology, also conducted this research ...

Critical step traced in anthrax infection

...genetics at HMS, provides insight into the broader question of how proteins cross cell membranes. The findings appear in the July 29 issue of Science. An anthrax bacterium secretes three nontoxic proteins that assemble into a toxic complex on the surface of the host cell to set off a chain of events leading ...

How exactly does the brain control breathing?

...ous effort whether we are awake or asleep, but the question that has intrigued many scientists for well over 100 years is what maintains this almost fail safe vital rhythm throughout life? Experimental Physiology editor Julian Paton invited two world renowned scientists Dr. Guyenet from the University of Cha...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

...teeth as "dinosaur teeth," but it also throws into question the identity of other presumed dinosaur ancestors known only from teeth, which includes all Late Triassic ornithischians outside South America. "Because the teeth look like those we know from herbivorous ornithischians, people assigned them to the d...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

...teeth as "dinosaur teeth," but it also throws into question the identity of other presumed dinosaur ancestors known only from teeth, which includes all Late Triassic ornithischians outside South America. "Because the teeth look like those we know from herbivorous ornithischians, people assigned them to the d...

Bioinformatics reveals new gene regulation system

...present a universal regulatory mechanism. The next question was whether the signal was promoting or repressing expression of Nrd genes. The team observed that their signal always overlapped with the promoter signal, the region of DNA required for the initiation of the conversion of gene to protein. Molecules...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

...ffeted by another outside force such as rain, is a question that has now been answered in part by Boston University researcher Karen Warkentin. According to her findings, reported in an upcoming issue of Animal Behaviour, it's a particular characteristic of the vibrations that shake the clutch -- not only the...

Cats' indifference towards sugar explained

...rictly carnivorous behavior. "We took a behavioral question and answered it molecularly," says Joseph Brand, senior author of the study and Associate Director of the Monell Chemical Senses Center. Scattered on mammalian tongues are specialized taste bud receptors that recognize specific tastes, including, of...

Tufts researchers shine light on firefly mysteries

... For the first time, researchers will explore the question of whether male fireflies' flashing light ?previously shown in one species to indicate superior physical and genetic quality ?has evolved in another species to provide misinformation to prospective mates. In other words, are some male fireflies lying...

Fluorescing lab worms signal longer life spans

...tions, said Rea. "This work starts to address the question of why genetically identical organisms raised in identical environments still age at different rates," said Rea. "It suggests that chance alterations in how stress-response mechanisms are maintained dictate how individual organisms respond to specifi...

Researchers seek to discover what really happens when a virus enters the body

...he production of milk by lactating women. So the question remains: do we really know what a body's host cell does when a virus infects it? Bell and Duca's collaboration is an attempt to profile the host-virus system using the electrical engineering concepts of signal and image processing. As Duca, a bioph...

Pinpointing the cause of a neurodegenerative disorder

...n cause pathology," she said. "So, this raises the question of whether mutations in the genes for these proteins enhance their normal action. "Importantly, such insights can now guide studies that focus on the normal function and interactions of these proteins and how they might be enhanced by disease-causin...

Pinpointing a culprit molecule in Alzheimer's disease

...of promoting amyloid deposition," they wrote. One question the new transgenic mice might help address, wrote the researchers, is whether Ab peptide does damage inside brain cells or outside--"intracellularly." Transgenic mice produced by other researchers have not settled this question, because the peptide w...

Biased reporting found in cancer prognostic studies

...ng mountains of information, some are beginning to question the validity and possible biases in many of the studies. To examine the question of selective reporting bias, Panayiotis A. Kyzas and colleagues from the University of Ioannina in G...

Gene therapy to lower blood pressure just enough

...h of the world's population as well." The gene in question -- atrial natriuretic peptide or ANP -- promises ...at occurs as a result of high blood pressure. One question that remains is whether the body will accept repeated injections of the viral vector or whether its ...

Study identifies gene in mice that may control risk-taking behavior in humans

... to fear, or why they take risks, Olson said. "The question is, are there differences in the neuroD2 gene-codi...tely unexplored question; it is the immediate next question you would go to if you want to understand how this gene impacts human behavior." ...

US Army plans to bulk-buy anthrax

...ts have caused major concern. "It raises a serious question over how the US is going to demonstrate its compliance with obligations under the Biological Weapons Convention if it brings these tanks online," saysAlan Pearson, programme director for biological and chemical weapons at the Center for Arms Control ...

The synapse is a shotgun

...onvinced that ectopic release exists, any time you question an accepted concept, there will be doubt and resistance," said Sejnowski. "So, we will continue to develop this new picture of the synapse to convince doubters, because this is such a different way of looking at how the synapse functions." Sejnowski ...

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