Scientists discover new intricacies in how ulcer bugs stick to stomach
...ingly, specialist babA doesn't bind to Lewis b any tighter than generalist babA. This suggests the specialist type may have developed not because of an advantage for the bacteria but through simple attrition of the generalist form. "We suspect that the bacteria have a tendency over the course of multi...Drugs limit deadly side effects of graft-versus-host disease
...cetylation, on the other hand, make chromatin wind tighter around histones. This makes the DNA unavailable for transcription. "HDAC inhibitors prevent deacetylation by blocking a binding site the deacetylation enzymes need to keep the chromatin tightly coiled up," Reddy explains. "This means the chromatin ...Science's breakthrough of the year: Illumination of the dark, expanding universe
...culture, the debate over the costs and benefits of tighter security and anti-terror measures in the realm of science, and studies of the heavy "bottom" quark. ...US crackdown on bioterror backfiring
...s of disease research. The authorities decided far tighter control was needed over biologists withaccess to d... is a crime. The scientific community does support tighter controls, says Ron Atlas, former president of the American Society for Microbiology (ASM). "Common ...Weizmann scientists invention moves forward: Cancer diagnosis technique gets FDA clearance
...enly, with areas of densely packed cells that have tighter between-cell spaces than normal. In order to obtain the 3TP image, the contrast agent, which enhances the MRI images, is injected into the bloodstream, and the flow of the agent into the area being scanned is traced. The agent, which quickly passes ...Hyperglycemia may increase risk of eye disorder in premature infants
...inds, then we may be able to reduce the risk using tighter glucose control in the first few months of life." Hopkins researchers examined the charts of 16 preemies born at The Johns Hopkins Hospital between 1992 and 1997 who developed ROP, and compared them to 31 healthy infants based on gestational age,...Tailor-made cancer drugs: Wave of the future?
...efit is that a single strand of RNA actually binds tighter to a strand of PNA than it does to itself. So, the prodrug and the catalytic components each contain a PNA strand that is complementary to the cancer cell's mRNA, allowing them to bind right next to one another in the cancer cell. This close proximi...Fluid forces within the body help invasive bacteria
...icking to something. Here we see a protein binding tighter when it is trying to be sheared off. That opens the door to further investigation." Presently, most research operates on the assumption that shear stress reduces the lifetime of a receptor bond. However, the paper in Cell suggests that the force migh...New understanding of complex virus nano-machine for cell puncturing and DNA delivery
... attachment; then the short fibers fasten to get a tighter grip. The baseplate is the "nerve center" of the virus. When the long and short fibers attach to E. coli, the baseplate transmits this message to the tail, which contracts like a muscle. The baseplate both controls the needlepoint of the tail...Science, engineering and technology news tips
...more effective, Meare's lab looked for ways to get tighter binding between the antibody and the radioactive element indium-111, contained in a small carrier molecule. In the experimental treatments currently in trials, antibodies are tagged with radioactivity using two natural molecules, biotin and streptavi..."Smart" fertilizer improves plant growth, prevents pollution from run off
...l regulations on run off can be expected to become tighter in the near future. Sudden growths or blooms of m...thy for wildlife. He adds that Europe already has tighter regulations than the U.S. While the low, natural levels of phosphorus released by the new "smart" fe...Scientists look to nature to cut greenhouse emissions
...blem for coal-fired power plants, which are facing tighter federal pollution laws. But scientists at Ohio University are looking to nature to develop a cleaner, inexpensive way of removing carbon dioxide from smokestacks. The researchers, supported by a new $1.07 million grant from the U.S. Department of E...Study finds children are exposed to pesticides
...EPA has targeted in its first efforts to implement tighter safety levels under a 1996 law. Gauging children's aggregate exposure and cumulative risk to those pesticides is a tremendous task. There is considerable discussion about the best way to monitor exposure among children. Fenske and colleagues write ...Howard Hughes Medical Institute funds biomedical facilities at Lawrence Berkeley National Lab
...an the conventional bendmagnets now deployed. The tighter curvature of the bends will cause the electrons to emit hard x-raysas opposed to the lower energy "soft x-rays" extracted from current ALS bend magnets. It isanticipated that the superbends will yield x-rays as high as 50 keV in energy. Demand for ...China now leads world in sulfur emissions, study shows
...e United States from high- to low-sulfur coals and tighter environmental controls," says Husar. "In the former Soviet Union, there has been a greater reliance on natural gas, which is abundant in Russia. "In the United States, alternative fuels such as natural gas and nuclear power have made an impact. In...New Hampshire Study Shows Well Water Has Higher Arsenic Levels Than Municipal Water
...eholds or 25 individuals."The study concludes that tighter federal guidelines would not necessarily"alleviate the health risk" to people who get their water from domestic wellsthatare not regulated by EPA. The article claims that 15 percent of the U.S.population, including nearly 40 percent of the people i...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
...ms race" with animals that could swim faster, grab tighter and fight with greater effect dominating the ocean environment and conquering new ones like the land. During the Cambrian, animals got bigger and more diverse, but those changes did not require new genes. The techniques being pioneered by Ca...Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"
...in the brain.And the larger the repeat region, the tighter they bind." Authors of the study are from the same team that discovered the major genelinked to Alzheimer's disease. In many ways, "this finding may be morepivotal than our earlier work," said Dr. Allen Roses, scientific directorof the Deane Laborat...