UCSF finding advances insight into adult stem cells in human brain
...thus going through the cell-cycle repeatedly, each cycle increasing the odds of a cell developing genetic errors. The accumulation of errors would make a cell more likely to slip into disregulated replication overdrive, the hallmark of cancer. "If this theory proves true," says Sanai, "it would open up...Imaging technique reveals new structure in retinal cells
...diate chemical product in the retinoid cycle. That cycle is critical in the regeneration process for 11-cis... the researchers isolated its role in the retinoid cycle through a chemical analysis. They also watched the retinoid cycle in normal mice and two types of tr...Anthrax spores can germinate, grow and reproduce in soil
...n the laboratory. "All stages of the anthrax life cycle were found to occur in soil, including germination...monstrates that anthrax can complete its full life cycle without a mammalian host." Researchers in Hanna's laboratory collected ordinary soil from the bank o...ESA to select new Earth Explorer missions
...ole of terrestrial vegetation in the global carbon cycle and its response to climate variability. WALES (Water vapour and Lidar Experiment in Space) Water vapour is the dominant greenhouse gas and knowledge of its distribution is crucial to understanding the global energy and water cycle, cloud interact...The scoop on poop: Insect feces, dead leaves may provide clues to health of world
...r of zoology at the University of Oklahoma. "This cycle of nutrients occurs very rapidly in the rainforest. A leaf can completely decompose and its nutrients return to the soil in a matter of a couple of months. But, in Vermont for example, if a leaf falls in September, it will still be on the ground in...Scientists' findings may lead to better understanding of how that sleep develops, matures
...g criteria resembled those used in adults. A sleep cycle was defined as the succession of a QS/NREMS episod...formed and age trends of visually scored sleep and cycle variables were assessed. Absolute EEG power density measures were analyzed and significance level wa...AGI publishes 42nd edition of Directory of Geoscience Departments
...efore going to press, the shift in the publication cycle to a calendar year will make it possible for geoscience departments and new faculty members to submit updated information at the start of the new academic year. This will improve the currency of the listings in the Directory of Geoscience Department...Want a side of algae with that? Hawaiian farmers sell seaweed by the seashore
...aii, has developed a way to grow the complete life cycle of long ogo without needing to harvest starter plants from the ocean. Glenn says the sustainable system for growing fresh long ogo is unique in the United States. Molokai is a relatively undeveloped island, without the coastline-oriented tourist ind...A killer microbe as a living antibiotic
... Using Bdellovibrio's genomic information the life cycle of this unique bacterium can now be studied for th... In the free-living phase of its life cycle Bdellovibrio swims at high speed while locating areas of high prey concentration by use of its chemo...Adolescent rodents experience milder hangover effects than do adult rodents
...aversive effects could help establish a persisting cycle of drinking in adolescents, leading to a future of...recovery period, could help establish a persisting cycle of drinking in at-risk adolescent individuals which may lead to dependency and a life-long history o...World's first 'robot scientist' proves a major success in the lab
...s, and the process starts again - the same type of cycle human scientists use to understand the world. Although artificial intelligence has made a number of significant contributions to scientific discovery over the past 30 years, its general impact on experimental science has been limited, but this may be...If we are what we eat, some lake fish are made of maple leaves
...nd an ingenious method of teasing apart the carbon cycle of lakes," says James Morris, program director in the National Science Foundation (NSF)'s division of environmental biology, which funded the research. "Their study reveals a surprising degree of dependence of lake food webs on sources of organic mat...From neighborhoods to globe, NASA looks at land
...ration. Understanding these variables in the water cycle is a key to managing water in such resource-limited areas....Medical students inadequately prepared for clinical rotations, caring for chronically ill
...erviewing/physical examination, understanding life cycle stages, epidemiology and understanding systems of ...sical examination; 57 percent for identifying life cycle stages; and 56 percent for epidemiology. Only 27 percent felt this level of ability was necessary t...RNA lariat may tie up loose ends to decades-old mystery of retrovirus life cycle
...of what may be a long-sought mechanism in the life cycle of retroviruses, including the human immunodeficiency virus (HIV). Knowing the details of thisstep in the infection process could help pinpoint targets for new classes of drugs to fight HIV. In the Jan. 9 issue of the journal Science, Thomas Menees a...Wright State biologist studies birds to learn how our stomachs convey thoughts of hunger
...earch in Japan involved clock genes, or genes that cycle in a daily pattern, that are found in the gut. "We want to understand how the clock in the gut is sustained, the role of food and nutrition in sustaining the gut's rhythm and the role of melatonin, a chemical in the brain, in organizing the activity ...JCI table of contents, January 2, 2004
...nsin-Madison discuss the contribution of the lytic cycle to oncogenesis and how this finding impacts our current understanding of herpesvirus infection. TITLE: Inefficient establishment of KSHV latency suggests an additional role for continued lytic replication in Kaposi sarcoma pathogenesis AUTHOR CONTACT...Genetic master switch sends bacteria toward 'seafood dinner'
...ur eyeballs in chitin, and the carbon and nitrogen cycle upon which marine life depends would be gone within 50 to 75 years," said Roseman, a professor of biology in the Kreiger School of Arts and Sciences at Johns Hopkins. Researchers were puzzled about the disappearance of chitin because little of t...Traditional Christmas snack under threat
...s present, suggesting that the normal regeneration cycle has been disrupted. Having established the facts about Brazil nut tree populations at these sites, the scientists then ran computer models to predict population trends for the next 200 years. The patterns observed in the simulations were highly con......ction Both p53-dependent and p53-independent cell cycle checkpoints, which help to maintain genetic stabil...ects in the bladder [cell] lines suggest that cell cycle checkpoints may represent barriers to bladder carcinogenesis," they write. Contact: Dianne Shaw, Li...