JCI table of contents: March 15, 2007
...luble factors known as chemokines, but the precise identity of the chemokines that mediate the movement of monocytes from the bone marrow to the blood and then from the blood to the site of inflammation have not been well defined. In a study that appears online on March 15 in advance of publication in the A...Researchers at IRB Barcelona discover a new mechanism that regulates stem cell division
...ing two very distinct cells: one retains stem cell identity and continues to undergo asymmetric division, whil...a lifetime. To ensure the correct differential identity of the resulting cells, the complex apparatus that divides that stem cell in two must form along a p...UCLA scientists garner 7 grants to fund leading-edge embryonic stem cell research
...ar epigenetic heterogeneity as a blueprint for the identity and function of human embryonic stem cells. Principal Investigator Michael Teitell, Co-Investigator Utpal Banerjee: $635,024 Role of mitochondria in self-renewal versus differentiation of human embryonic stem cells. Principal Investigator ...Robotic cameras join search for 'Holy Grail of bird-watching'
...ng is in the frame, Cornell makes the call (on the identity of the bird)," said Song. Rohrbaugh pointed out the benefits of using an autonomous camera. "There are other ways of searching for the ivory-billed woodpecker, but those ways usually involve a human positioned in the forest for a very long time," h...NIH funds innovative alzheimer's research initiated at UCSB
...st several months, I believe we have uncovered the identity and shape of the primary toxic oligomer, said Bowers. Our results are consistent with findings on transgenic mice, recently published in the journal Nature, indicating that soluble oligomers with masses matching those we have identified have been ext...ACS News Service weekly PressPac -- Feb. 7, 2007
... "The ability of the SPAMS system to determine the identity of a single particle is a valuable asset when the target analyte is dangerous in small quantities or has no legal reason for being present in an environment." ARTICLE #4 FOR IMMEDIATE RELEASE "Identification of High Explosives Using Single-Particle ...Loss of a universal tRNA feature reported
...presents a radical departure from previously known identity rules for the histidine-carrying tRNAs." He added: "This result implies that tRNA recognition by the enzyme adding histidine to tRNA differs considerably from similar enzymes in other organisms. We have indeed been able to detect an impact on particu...New group of algae discovered: Picobiliphytes
...equences of the 18S gene, common to all cells. The identity of new organisms can be deduced from a comparison of familiar and unfamiliar gene sequences. "The gene sequences found in these algae could not be associated with any previously known group of organisms", explain Dr Klaus Valentin and Dr. Linda Medli...Electrical activity alters language used by nerve cells
...og embryos. These changes in activity changed the identity of the neurotransmitter produced by the nerve cells. Because the new chemical language being used by the nerves would not be detected if the muscles continued to produce only acetylcholine receptors, Spitzer and Borodinsky also looked for changes in...Spelling out cancer on the nanoscale
...them. No matter how small, every tumor reveals its identity in tiny amounts of abnormally expressed proteins called oncoproteins. Being able to read trace oncoprotein levels from early-stage tumors would speak volumes to physicians and cancer researchers. Enter nano-fluidics and the art of reading a lot from ...Extreme life, marine style highlights 2006 ocean census
...hen a fish passes an acoustic receiver, its unique identity is stored and later transmitted to a visiting ship, telling the fishs survival and location. The Census Pacific shelf listening array achieved more than 95 percent success in tracking salmon, sturgeon, and other fish engaged as Census correspondents...Study uncovers mutation responsible for Noonan Syndrome
...own as KRAS in a small subset of severe cases] the identity of the gene or genes responsible for fully half the cases had not been elucidated," Neel said. To identify candidate genes, a group led by HMS instructor Amy Roberts, MD, and director of HPCGG Raju Kucherlapati, PhD, conducted genetic analysis of o...New highways carry pathogens and social change in Ecuador
...lness. In addition to tracking the movement and identity of diarrheal diseases, they interviewed all the villagers about their social contacts and built a social network map as a way to measure social cohesion. Social cohesion affects the maintenance of infrastructure, which is relevant to disease transmis...Lab-on-a-chip could speed up treatment of drug-resistant pneumonia
...gs on unknown strains. "Even if you don't know the identity of an organism, if you know which drug works, it's still useful," Lochhead says. Accelr8, a former software company that refashioned itself into a biotechnologycompany, plans to place development instruments in collaborating clinical laboratories w...Sperm proteome gives 'tantalizing glimpse' towards the origin of sex
...ins in sperm rather than identifying the specific identity of each protein constituent "The sperm proteome provides a basis for studying the critical functional components of sperm required for motility, fertilisation and possibly early embryo development," said Dr Steve Dorus, also from the University o...Memories: It's all in the packaging, scientists say
...l as more central aspects of the event such as the identity of the word, can later be recalled. "We know that if the intra-parietal sulcus is damaged, then someone cannot attend to multiple aspects of the same object, such as its size and color," said Melina Uncapher, a graduate student researcher and lead ...Carnegie Mellon study reveals that odor discrimination is linked to the timing at which neurons fire
...poral coding hypothesis," which proposes that odor identity is encoded by the timing of neuronal firing and no...input, the mitral cells convey messages about odor identity to other parts of the brain. But they don't simply relay information. Their activity, and therefore ...Scientists convert modern enzyme into its hypothesized ancestor
...nklin said. "So it is remarkable that changing the identity of a single amino acid in an enzyme of 400 amino acids can make such a dramatic switch in the chemical reaction it performs. This finding, that such a simple change can dramatically alter function, provides experimental support for the hypothesis tha...'Fruit fly dating game' provides clues to our reproductive prowess
... gender. People wonder why there is so much gender identity diversity in the human populations this kind of mechanism may help us get a handle on that."...