Protective mechanism exploited by tumors may provide new cancer treatment
...sponse. "It's a general property of any tumor that survives long enough to come to medical attention that it has figured out a way to evade the immune system," Dr. Munn says. "What we would hope is that some group of tumors would rely primarily on this IDO mechanism to do that. It may not be because they are ...Soybeans may reduce risk of colon cancer
...like many substances that are digested, soy GlcCer survives the journey through the stomach and intestine with enough power to affect cancerous cells in the colon. Ensuring that cancer-fighting substances reach the cells is always a hurdle in any kind of cancer research. Cancer is most often found in cells th...ESA prepares mission to search for life on Mars
...that life has existed on Mars in the past, or even survives to the present day," he added. ExoMars, which is scheduled for launch in 2009, includes an orbiter and a descent module that will land a large (200 kg), high-mobility rover on the surface of Mars. After delivery of the lander/rover, the ExoMars orbi...If airbags work well, then Mars landing sites can be chosen more boldly, says UB geologist
...he transmission of radio signals. "If Opportunity survives the landing on Jan. 24, there is a high possibility that we will get to see layers of ancient rock, deposited when Mars was warm and wet and could have supported life," she says. "Evidence of river channels, which we expect to see at Sinus Meridiani,...Liberia announces protection of 155,000-acres of forest
... more than 40 percent of the original forest cover survives in Liberia. The forest is home to half of all known African mammal species, and is among the highest-priority regions in the world for primate conservation. Liberia is emerging from a three-year civil war that has been part of a 14-year conflict cl...Aggregation of cloned mouse embryos improves survival rate
...nefficient. Of every 100 cloned mice, roughly one survives to birth. The researchers found that when the clone hybrids were transferred back into the uteri of recipient mice, the survival rate jumped to 8 percent. The researchers even produced a litter of four cloned mouse pups, in stark contrast to the typ...Scientists find key to ocean bacterium that helps control greenhouse gas
...y environmental constraints. Prochlorococcus that survives in extreme low light conditions has more of the antenna proteins compared with strains that live close to the surface and iron is the limiting nutrient that regulates the organism's ability to harvest light energy. "Iron is critical for the health of...Novel bacterium detoxifies chlorinated pollutants
...ment. He suggested that BAV1 in some natural areas survives by eating low concentrations of chlorinated compounds formed from volcanic, biologic and possibly ultraviolet light processes. Other scientists assert that BAV1 occurred in the environment long ago, but only developed its chlorinated compound-based m...Hypothermia helps brain heal after cardiac arrest, finds University of Pittsburgh study
...sses, blood flow to the brain ceases. If a patient survives long enough to make it to the hospital, the patient often will be in a coma and at risk of permanent brain injury. In fact, less than 10 percent of patients make it through the chain-of-survival (early access to care, early CPR, early defibrillation ...Missing protein is double-edged sword in cancer development
...how loses its E2F3 factor and survives seems to gain an insidious advantage. For instance, that cell might gain one or more chromosomes that let it grow unchecked. "One small advantage is all that's needed to cause a mutation...Scientists find genetic key to TB bacteria survival in lung cells
...But where other bacteria succumb to the attack, TB survives in macrophage, having evolved over the millennia a mechanism to overcome the "oxidative burst" leveled at it. "These SecA2-dependent secretions, superoxide dismutase and catalase-peroxidase are enzymes that actually scavenge the oxygen radicals that ...Italian research reveals a new twist in the battle of the sexes
... there are hormonal situations in which one embryo survives more easily than another. The lining of the uterus may favour the implantation of one of the two types of embryos. It's possible that there is a higher rate of very early miscarriage among boys (before a woman even knows she is pregnant). Sperm conce...An origin of new world agriculture in coastal Ecuador
...ago). The carbon remaining from plant cells that survives inside phytoliths was dated using new methods developed by the authors in collaboration with a radiocarbon laboratory. Hunter gatherers in coastal Ecuador probably took advantage of resources from marine, mangrove and forest ecosystems, and began to...Gene vital to radiation resistance in bacteria
...so hard to kill. Understanding how this bacterium survives such extreme conditions could help researchers with everything from cleaning up nuclear waste sites to preventing cancer. To better define the mechanisms used by the bacterium to resist radiation, Earl and her team, which included researchers from T...Plant-fungal symbiosis found in high-heat extreme environment
...may be a new species of the fungus Curvularia that survives only in temperatures greater than 98 degrees when it associates with plants. The researchers suggest that thermotolerance may occur through symbiotic mechanisms like heat dissipation by pigment, such as melanin, or the activation of a "biological t...Beyond patches and pills: the remarkable future of drug delivery
...ch. Researchers, however, are creating a pill that survives the stomach's acids and carries insulin safely to the bloodstream. At least 11 companies are working on developing such a pill right now. Peppas is also developing a pill for the release of calcitonin to treat osteoporosis. Pharmacy on a chip -- Ha...Planting time for forest trees branches out to new seasons
..., January, early March and late April." If a tree survives a September planting so that its roots begin to grow in the fall, that tree will be further along in growing the following spring when new trees are just being planted. Also, if the window of planting time can be expanded, that will ease the time cru...Mechanism that enables fetus to survive in mother under study
... better understanding the mystery of how the fetus survives but also how the immune system works and possibly, why sometimes miscarriages occur. "Some women who are infertile may have genetic mutations in the sigma receptors so that progesterone is made by the placenta but the receptor is not functional," Dr...Study suggests global extinction crisis more serious than previously thought
...ly from China, has lost all of its populations and survives only in captivity, while the spotted hyena has lost only 14 percent of its populations despite large, human-induced habitat losses. Ceballos and Ehrlich also pointed to a growing problem they call political endemism, which they say occurs when popula......ose to the beach on the Italian island of Vulcano, survives best in a salty environment at a temperature of 100oC. Pyrococcus is industrially interesting because its enzymes are not destroyed at higher temperatures. Scientists are studying the organisms extraordinary living conditions and its variety of nutri...