A relative of smallpox is first virus found to invade cells as HIV does
...tations generally persist only when they provide a survival advantage, and certainly smallpox was a major epidemic which claimed countless lives during this timeframe. "Our new finding that a relative of the smallpox virus uses chemokine receptors such as CCR5 receptors to infect cells strengthens the hypot...Abgenix initiates phase III clinical trial of graft versus host disease therapy
...r doses of ABX-CBL had more than twice the 180-day survival rate observed in the lowest dose cohort, according...clinical benefits as measured by response rate and survival in the Phase II clinical trial," said H. Joachim Deeg, M.D., Department of Transplantation Biology a...Meet the chemical that lets sea creatures thrive
...xample of how different specieshome in on the same survival trick as they evolve. But its ability to stabilise a cow enzyme suggeststhat TMAO's protective power extends much further. In test-tube experiments, William Welch andChristopher Brown of the University of California at San Francisco have used TMAO to...El Niño triggers tropical forest reproduction
...to Curran, masting gives canopy trees an important survival advantage. In a typical six-week masting period, her research team collected 180 pounds of seed---ranging in size from a chestnut to a pistachio nut---from every acre of the six-square-mile survey area on the forest floor. "It's like Thanksgi......ccus radiodurans beats most of the constraints for survival of life on Mars - radiation, cold, vacuum, dormanc... quickly repaired. Coupled with its range of other survival characteristics, D. radiodurans has been dubbed a polyextremophile by Richmond, Sridhar, and Daly. ...Smell, taste may influence lifespan of the roundworm C. elegans
...t likely provide information that's crucial to the survival of the organism. They could, for instance, be pheromones that reflect population density, or compounds that originatefrom organic material, reflecting food availability. "A lot of people think lifespan is something that's fixed within the individual......istant ones unaffected, essentially select for the survival of resistant strains, sometimes inducing resistance in as little as six months. The protein family Kern describes in the Nature paper represents a potential target for a whole new class of antibiotics to specifically prevent pathogenic bacteria from ...UF study shows newborn kittens have shot at survival thanks to immune-boosting treatment
...eir first day of life, may have a better chance at survival thanks to a simple blood transfusion. In animals and humans, mother's milk produced in the first couple days after birth contains powerful disease-fighting antibodies. Kittens depend on the early milk, known as colostrum, for protection against s...Fertilizers linked to amphibian deaths
... criteria set up by the EPA does not guarantee the survival of some protected and endangered amphibians, the authors said in their report. According to Blaustein, health effects such as those caused by nitrates and nitrites may also work in concert with other environmental insults, such as acid rain or UV-B ...Reversible bone shrinkage documented in Galapagos iguanas
...e shrinking, the scientists report, to boost their survival during a change in the weather. Shrinkage was note...said. “They shrink to reach a body size where survival is high. If they shrank a centimeter or so, they already increased their survival rate by 10 percen...Injured spinal neurons reach out to each other, but not to healthy neighbors
...he study. "That, in turn, could encourage neuronal survival and promote rewiring after nerve injury." The type of neurons investigated by the authors are the motor neurons in the spinal cord, the cells that control the movement of skeletal muscles. Scientists know that motor neurons change their function aft...Transgenic fish could threaten wild populations
...preference over Charles Darwin's classic theory of survival of the fittest isnot unknown to wildlife specialists and geneticists. Muir likes to use the example of the male bird ofparadise with its long swells of gloriously colored plumage as an example: "The male bird of paradisewith the longest, thickest tai...Scientists develop most efficient mouse cloning strategy to date, create transgenic clone
...hat genetic make up of donor cells may be a key to survival of clones. "Embryonic stem cells from outbred m... the Jaenisch lab. Scientists also found that the survival rate of transferred embryos was higher with cloning using embryonic stem cells rather than somatic c...Science in the news: public choices, science & salmon
...altwater environments, maybe as critical to salmon survival as free flowing rivers. Charles "Si" Simenstad, Washington Sea Grant Research Scientist, Senior Biologist, University of Washington's School of Fisheries. 10:05 A.M. -- SCIENTIFIC ADVICE FOR ENDANGERED SPECIES RECOVERY: CAN SCIENCE SAVE SA...INEEL microbiologist joins Japanese on expedition to tap marine-methane deposits
... the sediments. They are virtually struggling for survival -- focused more on simply maintaining their ability to metabolize food rather than reproduction. Delwiche's objective was to obtain samples, and transport them intact, frozen and uncontaminated, back to the lab for analysis. He collected samples o...Researchers unlock secrets of directional cell movement
...se allows it to commune with its fellow amoebae in survival maneuvers. Research in the last decade on Dictyostelium demonstrated that cells use receptors coupled to G-proteins to sense chemoattractants. Just like other chemotactic cells, the amoebae can sense shallow gradients and have only one leading edge...The future of planet earth: scientific challenges in the coming century
...sed on the ecological conditions necessary for the survival of specific pathogens in nature. This information helps health professionals identify which geographic areas are potentially threatened, to determine which populations are at risk now and in the future, and to more accurately predict when an outbreak...ASU scientists probe salamander mysteries
...ad the disease. There is much to learn about the survival and transmission of the virus over time, as well. Dieoffs occur in cycles: Nearly all the salamanders in a pond become infected and die, and then some time later the ponds become repopulated with healthy animals. The pond may later become reinfected ...Gene therapy halts HIV replication in cells from infected patients
...tion. Additionally, the antitat gene prolonged the survival of immune system cells called CD4+ T lymphocytes, an essential part of the body's immune defenses and primary target cells for the AIDS virus. In this way, the antitat gene therapy might contribute to maintaining HIV in a dormant state in latently in...New Science study revisits the debate over bird parents, predators, and family planning
... migrations may need larger clutches to ensure the survival of their species, he speculates....