Tag: "takes" at biology news

New brain scan technology could save babies' lives

...ches them through the brain and the time the light takes to travel. A software package also developed with ...etc. MONSTIR is the size of a fridge-freezer and takes around 8 minutes to generate an image. The aim is to produce a version that is half this size, 5 tim...

Limiting the damage in stroke

...hinking about possible human therapies; it usually takes time for a patient to reach the hospital. Secondly, the same effects could be achieved by blocking IKK2 activity with a small artificial molecule. That's what a drug will have to do. Human cells have a very similar NF-kB signaling network, which mean...

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

...tracts the females to males. After spawning, which takes a few weeks, the adults die. It has taken Sorensen and his colleagues about 15 years to find, isolate and purify the pheromone so that Hoye and his colleagues could identify and synthesize it. The key component is a steroid with potency so great th...

Scientists narrow the time limits for the human and chimpanzee split

... computational approach that they developed, which takes into account more of the variability -- or statistical error--in the data than any other previous study. Gene studies are needed to address this problem because the interpretation of the earliest fossils of humans at the ape/human boundary are contr...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

...tracts the females to males. After spawning, which takes a few weeks, the adults die. It has taken Sorensen and his colleagues about 15 years to find, isolate and purify the pheromone so that Hoye and his colleagues could identify and synthesize it. The key component is a steroid with potency so great th...

Sahara's edge studied from ground, air and space to improve water management

...E) under the Ministère de l'Agriculture. Aquifer takes place within the framework of the TIGER Initiative...up co-ordinator for the Aquifer project. Aquifer takes place as part of the TIGER Initiative, aimed at applying Earth Observation to supply water-related g...

Overfishing may drive endangered seabird to rely upon lower quality food

...ignaled by greater levels of carbon isotopes. "It takes about 70 to 80 krill to equal the energy value of one sardine," said Beissinger. "When murrelets have to rely upon less nutritious foods, they need to spend more time diving underwater to catch and eat them, and have less energy to make and lay eggs....

Olfactory system detects pheromones that control reproduction

...to most biology textbooks, detection of pheromones takes place in a specialized structure, called the vomeronasal organ (VNO). Although the VNO resides in the nasal cavity, the pheromone sensory system is distinct from the sense of smell, as are the chemical receptors involved. In animals possessing a pher...

RNA splicing occurs in nerve-cell dendrites

... Researchers have long agreed that mRNA splicing takes place within the cell nucleus. In the nucleus of a mammalian cell, a gene is copied into mRNA, which possesses both exons (mature mRNA regions destined to code for proteins) and introns (non-coding regions). mRNA splicing works by cutting out introns...

How the neuron sprouts its branches

...er, after the Golgi orient toward one dendrite, it takes off and grows dynamically to become the longest dendrite." The researchers also used tracer molecules to track the molecular cargo secreted by the Golgi, said Ehlers. "We saw very clearly that this cargo that originates in the Golgi gets directed to...

Scientists show how thinking can harm brain cells

...es in the brain. It can be produced by neurons and takes part in the working of synapses, including activity associated with learning and remembering. It also is produced by immune cells during inflammation. The amount of PAF in the brain increases dramatically in HIV-1-associated dementia and other neurod...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

...ven if a gene turns on when no microarray sampling takes place." Bar-Joseph's procedure is based on a "check-sum" protocol initially developed to ensure that email messages sent via the Internet don't become garbled in transmission. In the standard Internet check-sum protocol, bits of information that beg...

A salty tale: New bacterial genome sequenced from ancient salterns

...eally extreme environment, bacteria can do what it takes to survive, including exchanging genes with other microbial species that we might not expect." Normally, high-salt environments denature bacterial proteins. To survive, S. ruber must maintain a high concentration of potassium inside its cytoplasm, k...

Common molecular 'signature' identified in solid tumors

...n genetic pathways that become scrambled as cancer takes hold and spreads. He says narrowing the list of the most active ones provides a guide to directing future research. "We know that there are hundreds of miRNAs, and some of them may have multiple gene targets. Finding the ones that appear over and o...

Portable cocaine sensor developed at UC Santa Barbara

...ry with large and expensive equipment. The process takes from hours to days to get a result. The potential...peutic dose versus a lethal dose is a process that takes six hours. With the new sensor, the blood level of the drug could be immediately detected and deaths...

Cellular scale drug delivery from the inside out

...e nanospheres may provide the key to studying what takes place within a cell. Currently, scientists have difficulty introducing chemicals or genes into cells without either damaging the cell or causing a chain-reaction of events that can't be tracked. "With current gene therapy, it's possible to switch ge...

Study ties 'new' cell-death mechanism to developmental and degenerative brain disorders

...ellum, while the cell death of Alzheimer's disease takes place in the hippocampus of the temporal lobe and that of Parkinson's disease occurs in the substantia nigra of the brain stem. Pulst said the new findings on neurodegeneration do not necessarily supersede the prevailing hypothesis of defective pro...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...kins." QT interval measures the period of time it takes the heart to recover from the ventricular beat - when the two bottom chambers of the heart pump. Corresponding to the "lub" part of the "lub-dub" pattern of the heartbeat, an individual's QT interval remains constant. This interval is partly dependen...

Rochester scientists develop fast-working biosensor

...hods of detection of bacteria can take days. "This takes as much time as it takes for a snapshot," Miller said. The scientists currently are defining the sensitivity levels of the t...

Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

...demy of Science. This method is less expensive and takes less time than conventional techniques. Carbon nanotubes are rolled-up sheets of graphite only a few nanometers wide-about the width of a molecule of DNA. The researchers used these nanotubes' electrical properties to find a particular mutation in t...

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