Bacterial Toxin Surprises Scientists
...ows the entrance of foreign particles, the escape of intracellular components, and, perhaps most devastating, loss of the vital electrical potential stored in the membrane. The researchers determined the parts of the protein that lie on each side of the membrane when ...Transgenic Rice Plants Resist Insects, Drought And Salt Damage
...stay where the genetic engineers put them and not escape to produce a super weed, Wu said, because rice is a self-pollinating plant and few other plants can cross-pollinate with it. The Rockefeller Foundation's Toenniessen observed that undernourishment already is a problem in most rice-dependent countrie...Nitric Oxide May Hold Key To First Treatment For Deadly Form Of Malaria, Duke Scientists Report
...hen the researchers were studying why somebacteria escape attack by immune system cells called macrophages, whichare designed to disable and devour them. The question is of increasing importancein acute health care. When bacteria invade the body, the immune system floods the bacterialcell with nox...Nitric Oxide Found To Control Cells By Turning On Genes; Suggests New Role In Health And Disease
...hen the researchers were studying why somebacteria escape attack by immune system cells called macrophages, whichare designed to disable and devour them. The question is of increasing importancein acute health care. When bacteria invade the body, the immune system floods the bacterialcell with nox...How Dry Is The Tropical Free Troposphere? Implications For Global Warming Theory
...llows a larger portion of the infraredradiation to escape from the Earth, thereby cooling the atmosphere. Currentcomputer models do not accurately handle the processes which control thehumidity in this region, which are related to how much cloud material fallsout of rainfall systems. Dr. Spencer, NASA's Se...Scientists Find New Trigger For Nerve Cell Death
.... Potassium seemed like the obvious ion to escape because there's so muchof it in the cell. Yu therefore measured potassium movement through themembranes around cultured nerve cells after various events that cause apoptosis. Six hours after the neurons were deprived of serum, the current flo...Handfish Steps Back From Brink Of Extinction
...the Federal Endangered Species Protection Act, may escape extinction as a result of successful breeding trials and research into its biology. "We believe we now have the techniques to proceed with developing a larger-scale breeding program for this and other related handfish species if required," sai...Top Scientists Challenge Others: Join Biodiversity Year
...st Harold Mooney. "In a very real sense, we cannot escape responsibility for managing our impact on those systems. It's time for scientists to take stock of what we know, and what we need to learn, so society can act on that responsibility." That is why Mooney and four other internationally prominent scie...Leftover Fetal Cells May Affect Development Of Scleroderma
... an A gene from the father, that child's cells can escape detection by themother's immune system, even though they are mismatched. This substudy enrolled 21 women with scleroderma and all 47 of their children,and 32 healthy women and all 58 of their children. The researchers wereparticularly interested i......target for the fightagainst cancer, in which cells escape regulation and divide uncontrollably. Thefindings are published in the February 20 Science. APC proteins are activated as the cell progresses through mitosis, butas yet, Kirschner and Yu do not know exactly how they are regulated. However,unc...Uterine Environment Boosts Learning Ability In Mouse Offspring
...nce, open-field activity, swimming rotation, water escape learning,discrimination learning, Lashley maze learning, Morris maze learning, andavoidance learning. The results showed minor differences in overall cognitive abilitybetween the Non-Transfer and In-Strain Transfer groups. But the Out-Strain ...Relapsing Fever Spirochete Switches Surface Proteins When It Changes Hosts
...an infection that allow themicrobe to periodically escape immune detection, leading to a relapse ofsymptoms. "In our mouse studies," says Dr. Schwan, "we found that theseproteins all get turned off during infection in the tick and a different stabletype of protein gets produced in their place. But when th...Ecological Consequences Of Jasmonate-Induced Responses For Plants In Native Populations
...iable seeds. Hence when plants are protected or escape from herbivore attack, plants treated with jasmonate produced significantly fewer viable seeds at the time of senescence. This cost, however, becomes a net fitness benefit for plants growing in populations that have a higher probability o...Genetically-Altered Crops Can Produce Tough, Hard-To-Kill Weeds
...ultivated oilseed rape, sunflowers, and squash can escape from crop plantsinto the weed population. In fact, previous studies have shown that oilseed rape pollen can reachweeds nearly one mile away. "If farmers spray their crops with the same herbicide every year, theonly weeds to survive wi...Scientists Find New Clues About Fatal Childhood Disease, Ataxia Telangiectasia
...hopossess a single defective copy of the ATM gene, escape most problems associatedwith the disease but may have a slightly increased risk of cancer, includingbreast cancer in women. Because A-T has so many different sympto!!ms, researchers believe studying the ATM protein will provide insights into avariet...Lake George Water Is Death On Zebra Mussel Larvae
...ngs continue to provide hope that Lake George will escape thedevastating impact that other lakes have experienced when these menacing musselstake up residency," Nierzwicki-Bauer said. A zebra mussel pair can produce and fertilize several million eggs a year."That's the bad news. The good news is that 98 per...Scientists Sequence Chlamydia Trachomatis Genome
...lls, how it causes scarring and how Chlamydiamight escape the effects of antibiotic therapy." The last few years have yielded critical advances in the battle against thisdevastating STD. A highly sensitive and specific urine test to diagnose theillness has been developed. The pharmaceutical industry has ...New Research Shows Loggerhead Sea Turtles Sustain Delicate Dunes
...r them across the dune. She said some eggs escape predators but are damaged when the roots ofplants grow toward the egg and break through the shell to reach thenutrients inside. If the eggs survive and a hatchling emerges, the fluid inside the eggremains in the ground and still provides nour......roteins called rifins, which may help the parasite escape theimmune response. A better understanding of these genes and their proteinproducts will help us develop new strategies to control malaria," Dr. Gottliebadds. Genetic sequencing reveals the lineup of paired chemical bases that make up thepathogen's ......iding inside host non-immune cells,from which they escape to lymphoid organs only under certain circumstances. For more information about UPMC Health System, please access http://www.upmc.edu ....