Organelle's discovery challenges theory, could alter approach to disease treatment
...he plasma membrane ringing the organisms. "What we describe is a discrete organelle independent of the plasma membrane," Docampo said. "It has a proton pump in its membrane, which is used to maintain its interior acidic content. This has never been described before in a bacterium." The existence of discrete...The Year of Biodiversity and Conservation
...ee of Life" initiative, an international effort to describe the genealogical relationships of all 1.7 million known species on Earth. Three Field Museum scientists Shannon Hackett, Ph.D.; Petra Sierwald, Ph.D.; and Peter Makovicky, Ph.D. -- are playing key roles in constructing Trees of Life for birds, spid...Neural stem cells take a step closer to the clinic
...e University of Wisconsin-Madison's Waisman Center describe the first molecular profile for human fetal neural stem cell lines that have been coaxed to thrive in culture for more than a year. The work is an in-depth analysis of global gene expression in human neural stem cells and demonstrates a method for pr...Ancient pollen yields insight into forest biodiversity
...est. "In the mathematical models ecologists use to describe how different species compete for resources such as light, moisture and nutrients, it can be difficult to get species to coexist," he said. "In models, slight advantages allow one species to 'outcompete' the other, leading to extinction, that is, lo...JCI table of contents, 2 June, 2003
...nvestigation, Christopher Esslinger and colleagues describe their use of a third generation lentivector capable of transducing DCs in vivo in mice and inducing a very strong antigen-specific immune response. The immune response was shown to be superior to methods using DCs transduced outside the body in terms...Turning foe into friend with lentiviral vectors
...nvestigation, Christopher Esslinger and colleagues describe their use of a third generation lentivector capable of transducing DCs in vivo in mice and inducing a very strong antigen-specific immune response. The immune response was shown to be superior to methods using DCs transduced outside the body in terms...U of Minnesota leads effort to break impasse over GMO safety
...rs Anne Kapuscinski and Lawrence Jacobs and others describe the formation of working groups to set standards for building human and environmental safety into the entire development process for two classes of genetically modified organisms (GMOs): fish modified for increased production in fish farms and plants...DFG to establish nine new collaborative research centres
...ic. This approach aims to develop new models which describe the role of information structure in human cognition and in the structure of language. This will contribute significantly to a theory of human language ability and a theory of grammar. Speaker: Prof. Dr. Caroline Fry, University of Potsdam, Tel.: 033...... State University and at Digital Instruments/Veeco describe their method for creating nacre-like material that consists of alternating layers of clay and a type of polymer called a polyelectrolyte. Kotov received a National Science Foundation (NSF) CAREER Award to pursue the work. "The discovery allows re...Public health measures can contain SARS, two modeling studies suggest
...ent data on actual SARS cases to make their models describe how the epidemic has spread thus far. Next, they examined how other variables might be affecting the outcome. Riley's team estimated that a complete ban on travel between districts in Hong Kong could have reduced transmission, excluding so-called "su...Gene mapping key to unlocking human secrets, says geneticist
...ION, May 23, 2003 Community, Identity, Stability, describe the Brave New World conceived by Aldous Huxley in 1932, but today we stand on the brink of a brave new world characterized by the possibilities contained inside a double helix. Recent technological advances in human and animal genetics have led to s...Automated imaging of brain tissue, high-quality glimpses inside arteries
...ch in laser technology. The following news briefs describe some of the many technical highlights at the meeti...ve to traditional biopsy for many. Paul Herz will describe the OCT endoscope on Monday, June 2 at 1:45 PM. (Paper CMU2, Micro-motor endoscope with adjustable f...In potentially important discovery, scientists find two forms of genetic material chromatin
...iew of these variations, provided by the method we describe in our paper, could be used to diagnose and sub-type cancer and other diseases." It also could be an important tool for assigning functions to subsections of the genome, particularly for finding active genes, which remains a difficult problem, he sai...Math discovery may aid resource management
...on we needed, Rossignol said. It gives us a way to describe complex natural populations in more realistic terms, consider indirect interactions and really provide a much more accurate view of how natural systems will work. Well be far more accurate with our predictions and can use this approach in the new fie...World's smallest seahorse discovered
...ndall of the Bishop Museum in Honolulu, Hawaii, to describe the new species. Their research, appearing in the current issue of the journal Zoological Studies, is the result of extensive co-operation with divers, photographers and naturalists from around the world. For more information and photo and video imag...Engineered proteins will lead to 'synthetic biology'
...o-authors Loren Looger, Mary Dwyer and James Smith describe how they redesigned proteins from the gut bacterium E. coli. They used "periplasmic binding proteins" which are normally part of the bacterium's chemical-sensing system by which it detects nutrients. Such protein receptors detect their target molecul...What goes wrong in older eggs?
...rosophila meiotic nondisjunction, the term used to describe faulty cell division that can result in eggs that contain too many or too few chromosomes. During female meiosis in humans, nondisjunction can give rise to eggs with an extra copy of chromosome 21 and this accounts for 95 percent of all Down syndrome...Syracuse University geologists raise questions about controversial theory of species survival
...w York at Fredonia, coordinated stasis attempts to describe the emergence and disappearance of species across geologic time by suggesting that species living together in the same environment go through long periods of stabilitysome six million yearsand then undergo a rapid, almost complete turnover, during wh...Advances in prosthetic, orthopedic, and audiologic diagnostic tools
...llustrates the globe system, an improved method to describe shoulder positions for physical exams and studies ...day tasks. In contrast to the commonly used way to describe shoulder positions in terms of degrees of arm elevation, the globe system is a standardized method w...Study of bacterial enzyme reveals one key to cancer cell survival
...try, and her colleagues at Oregon State University describe how the same group of peroxiredoxin enzymes work differently in people and other mammals. The enzyme becomes the biochemical switch that keeps the amount of hydrogen peroxide in the body low, but allows it to increase when it is used for intracellula...