Tag: "stripped" at biology news

Cell's gatekeeper for ammonia revealed in unprecedented detail

... interior or in the reverse direction a proton is stripped away, leaving ammonia gas, NH3. When the ammonia reaches the other side, it regains a hydrogen atom again to become NH4+. "This mechanism provides the precise filter that prevents any other molecules or charged molecules from leaking through this ch...

Images reveal how rotavirus - leading cause of diarrhea - enters cells

...e outside layer is like a landing apparatus and is stripped off in the course of entry," explains Dormitzer, who also is an assistant professor of Pediatrics at HMS and is affiliated with HMS's Center for Molecular and Cellular Dynamics. "Its job is to get the innermost portions the genes and the replicatio...

Free electron laser reaches 10 kW

...) used within the laser. In the FEL, electrons are stripped from their atoms and then whipped up to high energies by a linear accelerator. From there, they are steered into a wiggler--a device that uses an electromagnetic field to shake the electrons, forcing them to release some of their energy in the form o...

Confidentiality of genetic databases questioned by Stanford researchers

...rns medical privacy requires that research data be stripped of identifying information such as names, addresses and even the last three digits of a patient's ZIP code before it can be shared. But the law is essentially silent on the issue of DNA, and most researchers have interpreted this to mean that sharing...

Following complex motions

...creases the proportion of hemoglobin that has been stripped of oxygen relative to the amount of hemoglobin carrying oxygen. Because hemoglobin without oxygen reflects less red light than hemoglobin with oxygen, active areas look slightly darker. This is similar to the way in which functional MRI works. A crit...

Professor uses satellites to protect Amazon forests, global climate

...ion's vast warehouse of natural resources is being stripped before it has been fully audited. So far, scientists estimate its trees and other plants provide between 20 to 50 percent of the world's oxygen as well as ingredients vital to the manufacture of medicine and other products. The Amazon is also home to...

Re-engineered blood vessels show promise for bypass surgery, grafts, UMHS researchers find

...sted the iliac (groin) grafts from rats. They then stripped this tissue of its cells using a detergent solution. The acellular tissue was injected with endothelial cells from genetically identical rats before being grafted into the rat's femoral artery. A control group of rats received grafts of acellular tis...

Mouse, stripped of a key gene, resists diabetes

...s able to resist the onset of diabetes. The mouse, stripped of a gene known as SCD-1, is apparently impervious to the negative effects of the type of diet that, for many people, has significant health and social consequences. "We think this animal model may be protected against diabetes," says James Ntambi, a...

White shark attack shows they're not man-eaters

...ated to be 15 to 18 feet long, grabbed her leg. It stripped the flesh from her left thigh, severing the femoral artery. She was briefly pulled below the surface and then released. When lifeguards reached her a few minutes later, she was facedown in the water. Authorities said she had bled to death. "Certainly...

Duke ecologist finds devastation, hope in Iraqi marshes

...f Basra's marine science center, where looters had stripped many classrooms of their contents as well as smashed vital scientific equipment. Richardson quickly learned that Iraqis also lack needed training "They have excellent marine biologists and zoologists who are very competent in what they're doing," he ...

A rare find

...als can be grown. The organic template can then be stripped away by burning it away or dissolving it, leaving a highly stable inorganic material with micron-sized pores (as opposed to the nanometer-sized holes in the microporous cationic materials discussed earlier). These would be put to such possible uses a...

UW-Madison scientists return to rat as biomedical research tool

...t" rats, specifically rats whose genomes have been stripped of genes that suppress breast cancer. The development, reported today (May 19) by a team of scientists from the University of Wisconsin-Madison in online editions of the journal Nature Biotechnology, promises to restore the rat to biomedical prominen...

Getting a handle on sensitive cycles

...stay docked onto DNA very long; they regularly get stripped off again and dismantled. New receptors arrive to ...receptor (in this case, the active form) has to be stripped off the DNA. "The first thing we discovered was a connection between gene activity, estrogen recept...

Food pathogen vector shows promise against cancer

..." Using killed E. coli as the main vector, Higgins stripped out the bacteria's virulence components while leaving a framework that remains attractive to macrophages, cells at the front lines of the immune system. Within this shell, his team then added large proteins for delivery to macrophages to generate an ...

Newly revealed viral structure suggests a continuum in the evolution of viruses

...s forming the outer envelope of the virus was then stripped away by a kind of graphical "surgery" to reveal details of the other molecules forming the viral interior....

Pregnancy hormone estriol shows promise as multiple sclerosis treatment in first human trials

...ing away a conductive coating. Once the coating is stripped away, the neurons don't conduct the brain's electrical signals as well. The early phase of the disease, or relapsing remitting MS, is characterized by inflammation in the brain with milder neurological symptoms that come and go. After about 10 years,...

Researchers isolate key part of cells death signals

...bind to BAK, turning it on. Letai's research group stripped the two kinds of pro-death proteins down to a basic unit, called a peptide, that enables them to bind to other molecule. Experiments showed that these peptides could hit their targets BCL-2 or BAK and set cell death in motion. "Interestingly, they ...

Clover strip-cropping in cotton provides critical habitat for threatened songbirds

...y impressed with the number of birds in the clover stripped fields," he said. "I believe that by changing cotton farming in this direction, we can support and help songbirds as well as build and protect our soil."...

Texas A&M chemist wins national award for new ways to analyze molecules

...y explore techniques to make versions of catalysts stripped down to their essentials and to study their surfaces, the atomic features with which they direct molecules in a reaction. One company in the industry has approached Goodman to collaborate on studies to develop a gold-based catalyst for making propyle...

Rainforests harvest the skies

...ughfall plus stemflow is the amount of extra water stripped by the forest. The team are now looking at developing gauges that can be used to estimate cloud stripping at a much wider range of sites and so build a fuller picture of the wet North Queensland rainforests contribution to the wet tropics hydrologic...

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