African bone tool discovery has important implications for evolution of human behavior
...bos are at least as old. Furthermore, a distinct sterile yellow sand horizon lies above the dark, anthropog...bone tools somewhat older. Direct dating of these sterile yellow dune sediments and of burnt stone from the same layers as the bone tools using thermoluminesc...UMass study uses microbes to turn mud into electricity
...ion of mason jars, ordinary electrical wiring, and sterile graphite electrodes to determine the science behind the mechanics of a simple, sediment battery. The researchers added a layer of common mud to water in the jars, put one graphite electrode in the mud, another in overlying water. The resulting elect...Blood markers may reflect newborns' potential of contracting HIV
...g a baby by C-section directly from the protected, sterile environment of the amniotic sac can limit the risk of HIV transmission. But in lower-risk pregnancies, where antiretroviral medications keep the virus in check, the risk of transmitting HIV to a newborn is only about 1 percent to 2 percent. A new st...Mating molds provide new insights into speciation and human reproduction
...hrough cross-breeding of species that normally are sterile with one another. The ability of Sad-1 to breach interspecies sexual barriers apparently works by preventing meiotic silencing from occurring, according to Metzenberg. "To our knowledge, this is the first case where the barrier between interspecies c...An animal study raises additional concerns about the use of dexamethasone on premature infants
...group received equivalent volumes of intramuscular sterile saline as the dex animals, and animals in the Han group received no injection but were handled during the same time period on PD 3 through 6.The animals were monitored for: Measurements. Weight and length were recorded before handling or injection o...Rush opens tissue and cell lab to produce cellular products
...P). Referred to as a "clean room" facility, ultra sterile techniques including clean air circulation are required. This facility must have a specially trained staff experienced in clinical grade cell expansion procedures and familiar with meticulous procedure documentation according to GMP and GTP regulati...Terminator tussle: Controversial technology needed, experts say
... why that is. My speculation is that making a seed sterile goes against some basic sense of what's right." But Thompson says it may be the Terminator label itself that caught the public eye. The Terminator name was given to the technology by anti-biotechnology interest groups. The scientists who developed t...Gene therapy may offer release from sterile isolation for patients lacking immune systems
...(SCID) that typically requires patients to stay in sterile environments. They are now living and developing normally, Italian and Israeli researchers report in the journal Science, published by the American Association for the Advancement of Science. Specifically, the two children have a form of the disease ...Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques
...acial lake may be ideal for developing and testing sterile drilling techniques needed before scientists attem...fe. "This would be an excellent place to develop a sterile drill," said P. Buford Price, professor of physics at UC Berkeley. "Then, if we find that we've inad...New gene discovered for male fertility in plants
... plants that are genetically engineered to be male sterile also could be useful in controlling the spread of genes from genetically modified organisms into wild plants. "Male sterility could prevent the spread of a genetically modified plant because, since it would not produce pollen, it could not cross-pol...New thoughts on evolution arise from UH yeast study
...tic or molecular mechanisms that make some hybrids sterile and others fertile and able to propagate as a new species? While our work was done with yeast, presumably the interactions that prevent or encourage speciation occur in other organisms as well," Travisano says. The method by which the hybrids replica...Without water, the body will shut down its need to ingest food
...hen food was removed, cannulas were connected, and sterile water was infused into the vena cava at a rate of 1.1 ml/min. Food (but not drinking water) was returned six minutes after the end of the infusion. Experiment 4: Effect of slow infusions of water in the stomach of rats not allowed to drink. To dete...Microorganism isolated in space
...d on a path-breaking project to send balloon-borne sterile "cryosamplers" into the stratosphere. The programme was led by cosmologist Professor Jayant Narlikar, Director of the Inter University Centre for Astronomy and Astrophysics in Pune, with scientists at the Indian Space Research Organisation and the T...Researchers discover novel function of gene often associated with cancer
...ith the syndrome are short throughout their lives, sterile and have poorly functioning immune systems....Medical devices safe, but could be safer with better regulation
...n procedure in which a bronchoscope is used to put sterile saline into the lower airways and then remove it so potential infectious agents and other causes of respiratory illness can be identified. In late November 2001, a group of Olympus bronchoscopes were recalled nationwide because of a loose port that ...Human sperm may 'smell' their way to the egg, Science study suggests
...Success rates for IVF treatment are not as high as sterile couples and medical doctors would like, he added: "Some of the difficulties experienced in IVF treatments may be linked to the 'quality' of sperm. Bourgeonal might be used in the future to find the motile and fast sperm cells that are needed for fert...Fast changing gene drives species split
...n to three million years ago, female offspring are sterile and male offspring die. Barbash and colleagues isolated and compared the Hmr genes from the different flies and found that they were getting more different, more quickly than other genes. Almost 8 percent of the genetic code had changes that would al...Genetically modified crops not necessarily a threat to the environment
...berg said. "Even if the wild hybrids are partially sterile or inviable, genes will still move across the farm property barrier. So it's really the fitness effects of a gene that dictate the speed at which it spreads. Genes that aren't advantageous to the wild plants will spread very slowly. The transgenes th...... Johnston said. "Once they're parasitized, they're sterile anyway...they're out of the picture," he said. "In fact, I'd love for the parasite to extend the life span because those drones are a drain on the colony. If drones, or fire ant males, would stay in the colony and suck up nutrients for another two ye...