Something's fishy with Columbia chinook: females carry male's genetic signature
...Columbia Basin. The reach is the last free-flowing stretch of the Columbia upstream from Bonneville Dam. The research is the result of just one season's testing, Nagler noted. Still, the preliminary findings raise provocative questions about other factors that may be responsible for the decline of the Northw...Function follows form in developing myocytes
... muscle cell precursors. Yang and colleagues show stretch rapidly alters this splicing pattern such that only the active isoform is generated, thus inducing the expression of SRF target genes. After analyzing lung tissue from human infants who had died perinatally with hypoplastic lungs, the authors conclu...Unprecedented fire season in southern Africa aids air quality, climate change research
...titude of 60,000 feet, where normal visibility can stretch 60 miles, I couldnt clearly see the city of Johannesburg until I was directly overhead." With instruments on the ground, in the air, and in space, scientists were able to sample the chemistry and measure the thickness of the smoke plumes, map th...... of which we are not consciously aware such as the stretch of blood vessels that control blood pressure," said Michael J. Welsh, M.D., principal investigator of the study. Welsh is a Howard Hughes Medical Institute (HHMI) investigator and Roy J. Carver Professor of Internal Medicine and Physiology and Bioph...Vanderbilt archaeological team unearths buried Maya royal palace
... Their location, at the beginning of the navigable stretch of the Pasion River, the major waterway used by the Maya, allowed them to control the trade in precious commodities between the Guatemalan highlands and the jungle lowlands. The record shows that they used their wealth to form alliances throughout th...Warming trend seen in late freeze, early thaw of northern waterways, say Science researchers
... data, combined with yearly records that typically stretch back further in time than air temperature data, make patterns of lake and river ice cover a unique proxy for climate change, say the researchers. Magnuson and colleagues combed through a variety of historical records of lake and river freeze and ...Gene for Mucolipidosis IV discovered
...d the potential disease-causing region to a narrow stretch on chromosome 19, Ruth Bargal of Prof. Bachs laboratory paired up with scientists at the Weizmann Institute Crown Human Genome Center, headed by Prof. Doron Lancet. The team, which included Drs. Edna Ben-Asher, Nili Avidan, and Zvia Olender, identif...Florida scientist finds eight new snails that may give water quality clues
...true homebodies; all live inside a 100-yard linear stretch of the spring run. For unknown reasons, that's true throughout the world for many members of this particular family of snails. Called hydrobiid snails, they belong to the largest family of freshwater mollusks and are found everywhere except Antar...Hopkins research may bring 'sigh' of relief to asthmatics
...e." The scientists speculate that deep breaths may stretch lung tissue, which then causes the release of a protective chemical that keeps airways open. "If we could figure out what that substance was, perhaps we could provide it to asthmatics via a drug," says Togias....BRCA1 cancer gene plays pivotal role in DNA control complex
...e relevant region of the protein corresponded to a stretch of the BRCA1 gene called exon 11 - a portion of the gene in which a high number of cancer-linked mutations have been found. This observation tends to confirm the significance of the findings linking BRCA1 to BRG1 and the larger SWI/SNF complex. Also,...Understanding how E. coli kills cells
...pan discovered that the verotoxins contain a short stretch of amino acids very similar to a sequence within the protein Bcl-2. Bcl-2 is a major player in a cellular process known as 'programmed cell death', in which surplus or damaged cells commit suicide to protect the whole organism from itself. This short...Nanofabricated 'gel' separates DNA
...llow section, the fragment is delayed until it can stretch out thin enough to fit through the smaller space. ...doing this, Han explains, because the strands must stretch out into a long, snakelike form to get through the pores of the gel, but then they never collapse ba......y, when Levine looked at tussocks along the entire stretch of river, he found invading species to be more abundant on the most diverse tussocks. The fact that the intrinsic protective effects of diversity did not agree with the observed patterns of diversity along the river suggested that something other tha...Genome annotation experts take standardized test
...predict gene elements within a 3 million base pair stretch of Drosophila DNA. The groups compared the results of their programs against each other and against the results of an exhaustive experimental and computational effort to locate all the genes in this region (not available to the participants during th...Nearly identical controls of immune genes in mice and humans hint at new asthma treatment
...e Berkeley National Laboratory (LBL) report that a stretch of DNA controlling all three cytokine genes is so similar in humans and mice that the mouse DNA can activate the three human genes inserted in a mouse. The researchers showed too that the activity of all three genes can be at least partially block...Mouse genome revealing which DNA sequences activate human genes
...s), Rubin, Frazer, and their colleagues examined a stretch of DNA about a million base-pairs in length from mice and humans that contained the same 23 genes in both species, including three interleukin genes (IL-4, IL-13, and IL-5). Previous studies indicated that these interleukin genes are similarly regul...Genes or environment: what shapes the sensory homunculus?
...ut he says that generally "it is not too much of a stretch to think that if you change the scale of representation in the cortex, you change behavior." Most parents marvel at how their children differ in their interests. Where could those differences come from? Genetics partly addresses this question by tryi...Fruit fly's genome sequence finished in record time: Physical maps are the key to accuracy
...quence identifiesevery pair of bases along a given stretch of DNA -- a good mappins down the location of uniq..." (BACs). Each BACaccurately represents a discrete stretch of the genome, and themap marks each BAC with at least one unique "sequence-taggedsite" (STS) -- ide...Bitter taste receptors identified
...ntified a likely looking receptor sequence in that stretch of DNA, and showed that it belonged to a family of some 80 genes, which they dubbed T2R s. Like T1R 1 and T1R 2 , the T2R genes were selectively expressed in taste receptor cells, but there was even better news. "If you look at the expressio...Study: Methane cleans nitric oxide from power plant emissions
... is not a problem-free technology by any stretch of the imagination," said Umit Ozkan, professor of chemical engineering at Ohio State. In a recent issue of the journal Catalysis Today, Ozkan and her graduate students,...