Tag: "intact" at biology news

ACS News Service Weekly PressPac -- January 10, 2007

...stems, the researchers state. The particles remain intact until reaching acid environments such as the phagosomes -- literal death chambers -- that form after macrophages engulf bacteria and other particles. Then the polymers breakdown, releasing their SOD directly at the site where inflammation begins. A...

Large size crucial for Amazon forest reserves

...olated by cleared land. Many species that occur in intact forest prior to destruction will not be present in a small fragment, but would they be found in an equally small plot surrounded by untouched forest? The answer to this question has profound management implications because it weights the relative imp...

Radiation degrades nuclear waste-containing materials faster than expected

...ed, natural radiation-containing zircon can remain intact for millions of years and is one of the most durable materials on earth. Some earth and materials scientists believe it is possible to create a structure that rebuilds itself after these "alpha events" so that it can contain the radioactive element...

Uric acid and spinal cord injury treatment

...s released and it accumulates around the remaining intact neurons, eventually choking them to death. When Firestein's group added uric acid to a mixed culture of rat spinal cord neurons and astroglial cells, the production of the glutamate transporter EAAT-1 increased markedly. The challenge now is find t...

Batfish to the rescue!

...h recruitment." Batfishes may be one of the last intact herbivore populations capable of reversing serious weed overgrowth of inshore coral reefs, he adds. The reef has already all-but lost one major group of weed-mowers, the dugongs, while another green turtles is seriously endangered. "If Platax is ...

UCSF stem cell study reveals cells' capability in mouse brain tissue repair

...lowing the Numb protein they synthesized to remain intact some neural stem cells had continued to function. Faced with damage in the region, these cells had responded, mediating the rebuilding of ventricular wall lining and establishing a modified neural stem cell environment. The scientists do not know ...

Weighty viruses

...ng to accurately analyze the masses of individual, intact viruses. Previous methods for determining the masses of viruses had a margin of error of 15%, which made them too inaccurate to ensure the resolution of small differences in mass. A team led by Huan-Cheng Chang has developed a new concept to attain...

Vanishing beetle horns have surprise function

...on of targeted cells while nearby tissues are left intact and undamaged. With the larval horn tissue destroyed, the scientists observed most larvae were unable to break the husks of their larval head capsules, resulting in young adult hatchlings whose heads were tightly (and lethally) encased within larval ...

News tips from the Journal of Neuroscience

...d corticospinal axon collaterals crossing from the intact side of the spinal cord to the denervated side. These same animals do not show long-distance regeneration after dorsal hemisection, indicating that the injury-induced axonal growth varies with fiber tract and lesion paradigm. 3. Timing in the Subs...

DNA repair teams' motto: 'To protect and serve'

...se, exist is to assure that chromosome ends remain intact through a lifetime of cell divisions. When asked if there are cancers in which telomerase activity goes awry, Karlseder answers with no hesitation: "Almost all of them." In fact, many proteins contained in DNA repair complexes are defective in canc...

Inventor helps grasslands go native

...harvest, the Seedster leaves the rest of the plant intact as forage and ground cover. Arbuckle and his wife Maggie designed the Seedster to be easy to operate and quickly adaptable. In field tests, it has recovered a high percentage of seed and done well at controlling contamination from other seed. ...

Erotic images prove useful in coaxing out unconscious brain activity

...itting side by side. One eye was presented with an intact picture of a nude person in one patch and the same...formation coming from the other eye, rendering the intact pictures invisible. The subjects were then tested to see if their visual attention had shifted to...

Cougar predation key to ecosystem health

...gy but is sufficiently remote that it still has an intact cougar population and far fewer mule deer. In contrast to Zion Canyon, streambanks in this watershed have nearly 50 times more young cottonwood trees as well as thriving populations of flowers, lizards, butterflies, and several species of water-lovin...

BG Group and Conservation International launch Conservation through Photography Alliance

...h at least 70 percent of their original vegetation intact qualified....

Predicting species abundance in the face of habitat loss

... has been lacking, in part because manipulating an intact food web has proven experimentally intractable, and in part because these different modeling frameworks have not been explicitly compared. Gotelli and Ellison overcame such technical limitations by using the carnivorous pitcher plant (Sarracenia p...

Oldest juvenile skeleton discovered will help piece together human development

TEMPE, Ariz. Discovery of a nearly intact 3.3 million year-old juvenile skeleton is filling an important gap in understanding the evolution of a species thought to be among the earliest direct ancestors to humans, says William Kimbel, a paleoanthropologist with ASU's Institute of Human Origi...

Republic of Congo announces two massive protected areas

...s. The south and west of the new park supports an intact block of Chaillu forest and the Ougue River basin ...i will protect a critical ecotone zone, a block of intact Chaillu forest, a mix of savanna and forest wildlife. The Ntokou-Pikounda forest will be a strongho...

Researchers identify taste receptor responsible for caffeine detection

... compound that is aversive to flies. Flies with an intact Gr66a receptor gene strongly prefer to consume sucrose (sugar) when given a choice between sucrose and a mixture of sucrose and bitter compounds, but the researchers showed that flies bearing a mutation that disrupted Gr66a failed to show this strong...

Boat paint to blame for Norfolk Broads' desolation

...areas of outstanding natural beauty might still be intact rather than on the long road to recovery."...

The sweet science: Viruses switch grip to gain upper hand

...hnique called a glycan array to study how a whole, intact virus interacts with carbohydrates. Scientists exposed 189 glycans mounted on a 3-by- 5-inch plastic plate to dangerous MVMi, harmless MVMp and three potentially dangerous, mutant strains of MVMp. Scientists found MVMp proteins stuck to the sam...

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