Feeder-free system for maintaining pluripotency in embryonic stem cells pioneered
...y do not share a majority of their gene expression patterns with mouse embryonic stem cells, and that there is a highly specific genetic definition of embryonic cells that makes them stem cells -- in other words, those cells that can give rise to all body cell types. This research was published in Development...Tiny heaters may pave way for easier tissue engineering, medical sensors
...s that feature different cells grouped in whatever patterns the scientists need. At the research level, Böhringer said, this could help make efficient use of time and funding. "You could create a chip that runs a number of different experiments at the same time," he said. There are also powerful appli...Araucariaceae of New-Caledonia: endemic species in danger
...oth the forest and the maquis. These distribution patterns express a clear affinity of Araucaria for exposed sites and for substrates originating from ultramafic rocks which often act as refuge areas where interspecific competition is less fierce. That situation favours specialized species, adapted to the st...AGU journal highlights - 6 January 2004
...ght in theNorth Pacific may help in measuring wind patterns and oceandynamics and could provide insight into b...pace-based system that can monitor the circulation patterns fromchanges in the sea surface height and predict the size of various fishstocks by observing the No...Changes in shape of single protein plays key role in the spread of cancer cells
...stalline forms of human vinculin and collected the patterns formed when the X-rays diffracted off the differen...arts of the protein. The researchers created these patterns using the X-ray crystallography facility at the Argonne National Laboratory (Argonne, Ill.). Diffrac...Ocean life depends on single circulation pattern in Southern Hemisphere
... predictions indicate that major ocean circulation patterns will change. While oceanographers have identified many ocean circulation patterns, the study found that three-quarters of all biological activity in the oceans relies on this single pattern. "When we shut off this one pathway in our models, biologica...Profiling the genes that make stem cells
...ting gene expression data to compare transcription patterns across a wide range of cell types and developmental stages. The expanded mouse transcriptome (record of transcribed genes) included data on unfertilized eggs; "totipotent" fertilized eggs, which have the potential to become any cell; pluripotent embr...Virginia Tech-led group receives third five-year international biodiversity grant
...in a 60-cell line panel. "If they find interesting patterns of activity, we will seek to synthesize analogs," Kingston said. Meanwhile, the Missouri Botanical Garden has surveyed plants in the Zahamena National Park and created a guide to the ferns and is creating a guide to the woody plants. "This will attra...Science's breakthrough of the year: Illumination of the dark, expanding universe
...g the first instant of its existence. By analyzing patterns in this light, researchers concluded that the universe is only 4 percent ordinary matter. Twenty-three percent is dark matter, which astrophysicists believe is made up of a currently unknown particle. The remainder, 73 percent, is dark energy. ...Traditional Christmas snack under threat
...ict population trends for the next 200 years. The patterns observed in the simulations were highly consistent with those observed in real data. Dr Peres says that both the data collected and the computer models point to a dwindling number of increasingly older trees in persistently overexploited areas, whi...'HapMap' scientists provide detailed plans
...yze the DNA sequences to determine the most common patterns of genetic variations in populations. Once finished, the HapMap will provide a freely available catalog of common patterns, or haplotypes. "What we learn from the HapMap project will simplify and accelerate efforts to identify genes associated...International HapMap Consortium publishes scientific strategy
... to develop a public resource a map of the common patterns of human genetic variations, or haplotypes that will help researchers find genes associated with human disease and response to medicines. In addition to the current paper detailing the project's scientific strategy, the consortium plans to publish a...Nomadic outposts of transplanted stem cells tracked in Stanford study
...ether the cells proliferate more quickly or if the patterns of inhabitation are altered. "We are really curious about what is happening," Cao said. "We want to know why the process is so dynamic with unpredictable fates for the initial stem cell foci. There's no obvious reason for the stem cells to leave what...Alcoholics with antisocial personality disorder have blunted emotional reactivity
...rug-related problems. Furthermore, the behavioral patterns exhibited by children and adolescents with CD, such as persistent aggressive and impulsive behavior and failure to adhere to societal norms, may be a marker for underlying deficits in emotional reactivity and related impairment in frontal-limbic proc...Map of genes in plant root yields new tool for exploring tissue development
...tected clustering of genes with similar expression patterns on the plant chromosomes. Besides aiding in basic ...ing to manipulate genes involved in the expression patterns they have discovered, to explore the effects on the plants' biological machinery. Three years ago, f...Mustard-root map breaks new ground tracking gene expression
...her on the plant chromosomes. Understanding these patterns of cell types and gene clusters, Benfey said, could help biologists decipher the genetic machinery of development and eventually lead to new ways to enhance crops. The research was funded by the National Science Foundation (NSF), the independent fede...Researchers find mechanism bacteria use to target specific chemical contaminants
...e and his colleagues also analyzed gene expression patterns in S. oneidensis to learn if different genes were expressed depending on what the bacteria uses to breathe. Indeed, the researchers found that S. oneidensis produces two specific proteins under anaerobic conditions, which allow the microbes to bind t...Purdue researchers create templates on retinal tissues
...rs at Purdue University have created scaffold-like patterns on the surface of a pig's retina, making templates... "The idea is to generate different types of patterns on the surface and test whether they indeed promote the proliferation of retinal pigment epithelial ...Changing one gene launches new fly species
... Wu said. The change in pheromones, which altered patterns of sexual attraction, "was a by-product of adaptation to colder weather." Fruit flies have a migratory history similar to humans. They originated in Africa, spread to Europe and Asia and went on to populate the world. As with humans, there is grea...The dopamine receptor D1 gene and ADHD: A piece of the genetic puzzle?
...est this, the authors investigated the inheritance patterns of four DNA changes (situated at various positions across the DRD1 gene) in a large sample of small families, each having at least one child diagnosed with the disorder. These children were more likely to have inherited one particular combination of ...