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Tag: "then" at biology news

'Virtual autopsy' helps identify drowning as cause of death

...ing, fluid or sediment in the stomach. Images were then compared to autopsy reports and photographs. MDCT indicated that all of the drowning victims had fluid in the paranasal sinuses and ears and ground-glass opacity in the lungs. Twenty-six (93 percent) had fluid in the subglottic (below the vocal co...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

... and prepare draft guidelines. The guidelines were then discussed at a two-day meeting, after which a draft manuscript for publication was prepared within 10 days. In a related editorial discussing how WHO is responding to global public health threats, the PLoS Medicine editors comment that while the ...

Focused ultrasound relieves fibroid symptoms in women

...ntify and define the target fibroids. Radiologists then used MRgFUS to locate and treat the targeted fibroids while monitoring temperature changes in tissue. Ninety-six patients were treated under the original study protocol (A), and 64 patients were treated under an optimized protocol (B). Protocol ...

'Nurse cells' make life and death decisions for infection-fighting cells

...aders. Once invaders have been identified, T cells then attempt to eliminate disease-infected cells. "In early studies, it was suggested that thymic nurse cells only removed non-functional thymocytes," said Eve Barak, program director in NSF's Division of Molecular and Cellular Biology. "This research ...

Eavesdropping comes naturally to young song sparrows

... sing, were exposed to the tutor for four days and then rotated to the other room where they heard the songs of the other two tutors for four days. At the end of two months the young birds were isolated from hearing one another or the tutors. The second phase of the study began when the birds were abo...

Want to save polar bears? Follow the ice

...d subsequent data into the GIS platform, which can then be used to generate the trends and recommended conservation actions. Findings will be presented in a peer-reviewed journal, future international conferences, and presented to countries and first nations actively managing and monitoring polar bear pop...

Mule deer moms rescue other fawns

...e to the speaker tended to withdraw right away and then stayed safely outside that distance. The behaviour of mule deer defies traditional explanations that parental care, kin selection or reciprocity play a part in the defence of fawns other than their own. But while the study's findings seem to point...

How brain pacemakers erase diseased messages

...a normally functioning brain cell. The researchers then gave the model neuron the pathological pattern of activity seen in people with tremors, assembled a group of these model cells and watched what would happen when the cells were electrically stimulated at various rates and intensities. In addition ...

Philandering female felines forgo fidelity

...heetahs through the use of fecal samples that were then subjected to genetic testing. By comparing individual genetic micro-satellites from 171 samples, researchers not only were able to determine if more than one father contributed to a litter, but also which of the known male cheetahs in the study area ...

Lessons from the orangutans: Upright walking may have begun in the trees

...king" that chimps and gorillas still use today and then into upright, two-legged walking in humans. Paleontologists have conventionally used signs of bipedalism as key criteria for distinguishing early human, or "hominin," fossils from those of other apes. But, this distinction is complicated by recent...

Moths mimic sounds to survive

...sociating the warning sounds with bad taste. They then avoided a second sound-producing species even though it was not chemically protected. This is similar to the way birds avoid butterflies that look like the bad-tasting Monarch. The two species of bats used were big brown bats and red bats. Barber...

Hawaiian treasure, macadamia nuts good for the heart

... the participants for five weeks. The participants then switched diets and continued eating only food provided by the researchers for another five weeks. The Healthy Heart diet with macadamia nuts did reduce total cholesterol, low-density lipoprotein cholesterol and triglyceride levels compared with ...

Pistachios lower cholesterol, provide antioxidants

...t and 11 percent saturated fat for two weeks. They then tested three diets for four weeks each with a two-week break between each diet. All three diets were variations on the Step I Diet, a cholesterol-lowering diet in general use. The diets included a Step I Diet without pistachios which had 25 percen...

Statin treatment improves spatial memory in mouse models of Alzheimer's

... week, with as much food and water as they wished, then divided into four groups. Half the “Alzheimer’s mi... mice on saline. After the maze test, brain tissue then was studied to determine levels of nNOS....

Catching cancer's spread by watching hemoglobin

...in a process known as "two-photon absorption," and then gives off signals that can be detected to build up...scan laser beams across the sample, a process that then reveals the outlines and contours of blood vessels. By taking images at different depths and stackin...

Does amateur boxing cause brain damage?

...teur boxers. Boxers were tested after a fight and then again three months after rest from boxing. The study also included 10 healthy men who were not athletes. The study found high CSF levels of neuronal and glial markers suggestive of brain damage after a fight. A particular marker for neuronal da...

Scripps research team sheds light on long-sought cold sensation gene

... amounts of a pain-causing chemical, formalin, and then exposed the affected paw area to a cold plate. Cold temperature clearly reduced the acute pain felt by control mice as shown by a reduction in the response to formalin injection when compared to the amount of time control mice spent flicking and ...

Technique monitors thousands of molecules simultaneously

... any excess receptor that has not found a key, and then treating the bound receptors with an antibody that... of the molecular library by an electrode that can then be used to monitor its behavior. The electrochemically addressable chips being used represent a ne...

Protein enables discovery of quantum effect in photosynthesis

...arried out by a complex called the chlorosome that then transfers the energy to the trimeric protein that in turn transfers to the Reaction Center," Blankenship said. ...

'Insulator' helps silence genes in dormant herpes virus

... that it was an insulator at work, the researchers then inserted copies of the structure into fruit fly em... "If the element we were testing was an insulator, then only one enhancer would be affected, and that's exactly what we found," Zhou says. Further studies s...

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