Spring through fall, cities are greener longer than neighboring rural regions
... use in eastern North America. Their analyses also show that changes in land surface temperatures and when...le in the observed effects. The data do, however, show that "greenup" changes in surrounding rural areas are linked to city size -- the larger the city, th...Study finds anti-HIV protein evolved millions of years before the emergence of AIDS
...lated to Apobec3G and found that some of them also show signs of evolutionary pressure. These too may have arisen to defend the host genome against mobile genetic elements and may now play a role in defending against as-yet-unknown viruses. Malik said that there is a good lesson to be learned from his lab...AGU journal highlights - 29 July 2004
...llitemeasurements at the top of the atmosphere and show that the Hadley model was inreasonable agreement w...oduced by power plantsin the region. Marufu et al. show that the unexpected power plant shutdown inAugust 2003 allowed researchers an opportunity to examine...LICR/UCSD team solves mystery of centromeres
...he DNA sequence doesn't matter, we've been able to show that a particular protein, CENP-A, determines where the centromere is located and copies this same location to a newly synthesized chromosome. The presence of CENP-A turns the centromere into a staff DNA and protein complex, and ensures that the cen...Casanova or caveman: Scientists isolate nerve cells that choreograph male fly's courtship behavior
... it, the flies are polite," he said. "Normal males show what we refer to as 'deference' - once one male starts courting a female, the other male leaves the couple alone for at least a while, postponing his own courtship. But what happens when we put several mutant males together with a female? All the mal......to improve a swimmer's flips, dives and strokes or show sprinters how to spring from the starting line," s...ed. The data she records during a performance will show her how much force is exerted by different muscle groups and joint movements. She'll combine that mo...Scientists build on case connecting inflammatory disease and depression
...mmune responses are similar to those in humans, to show how cytokine treatment causes serotonin depletion....at the same brain areas related to depression will show increased IDO activation and decreased serotonin levels. They also will evaluate potential treatment...Hunt for a new plant hormone points to carotenoids
...ovel hormone. The gene encodes a protein that they show can cleave carotenoids, such as the chemicals responsible for the orange pigment in carrots. This suggests that the new hormone is a carotenoid derivative, and this will help in the hunt for its identity....Springtime blooms seen earlier now than in the past, say Boston University biologists
...annual meeting in New York City July 30 August 2, show that among the plants studied in Boston's Arnold Arboretum, flowering times have moved forward over the decades, with the plants flowering eight days earlier on average from 1980 to 2002 than they did from 1900 to 1920. What has influence...DNA tests point to extinction of 2 distinctive arctic bird populations
...ontgomerie. His research team uses DNA analysis to show that both populations one in Newfoundland's highland ranges and the other in Alaska's Aleutian Island chain are genetically distinct from all other rock ptarmigan and should be considered separate species. "Traditional classifications often fail to...Gene therapy reaches muscles throughout the body and reverses muscular dystrophy in animal model
...ing breathing, and all the limb muscles. The mice show a whole body effect, with a dramatic improvement of their dystrophy." The findings hint that it may be possible someday to introduce other genes into adult muscle to address conditions besides muscular dystrophy. The gene therapy developed...Good bacteria trigger proteins to protect the gut
...mmatory response to commensal bacteria, they would show reduced injury from DSS. We had no idea that these receptors might be involved in protecting these tissues from damage." To explore whether the overgrowth of commensal bacteria contributed to the damage, the researchers depleted the bacteria from the...Rutgers cancer prevention expert calls for FDA action to reduce colon cancer and osteoporosis
...partment of Agriculture surveys cited in the paper show that Americans consume seriously inadequate dietary calcium and vitamin D far below the recommended levels established by the Food Nutrition Board, Institute of Medicine of the National Academy of Sciences. The Code of Federal Regulations (Title 21)...Study by Tufts biologist provides window into progression of some degenerative diseases
...uscular dystrophy develop in humans. "Our findings show a possible reason that cells with a certain type of mutation (expansion of repetitive DNA) die prematurely," said Catherine Freudenreich, assistant professor of biology at the School of Arts and Sciences at Tufts. "We may be able to use this informat...Study shows that ultrasound accreditation improves the quality of ultrasound practice
...trasound practices seeking AIUM accreditation must show evidence of physicians' training in sonography, certification of sonographers performing ultrasound examinations, continuing medical education for physicians and sonographers, and the presence of protocols and procedures to ensure proper and safe pra...Research reveals role of gene in infertility
...is its exquisite electron-microscope images, which show more clearly than ever before the process of cell ... Like a loaf of bread cut into slices, the images show a section-by-section dissection of the chromosomes that reveal their structure and position within t...... promote cell adhesion and signaling. Crump et al. show that Integrina5 promotes the development of an outpocketing known as the first endodermal pouch, which in turn acts as a template and helps to pattern a specific region of the hyosymplectic cartilage. But the pouch may have more far-reaching effects....A pathway to blocking autoimmunity
...thway leading to NKT activation. They were able to show that PPAR-gamma regulated the expression of a gene called CD1d, which encodes a glycoprotein responsible for the presentation of self and foreign lipids to T cells. This protein is indispensable for the generation of NKT cells. The researchers...West Nile takes its toll on rare bird
... from 112 sage-grouse collected after the outbreak show that none had antibodies, suggesting that they lack resistance. "When we tested individual sage grouse after the outbreak of the virus in 2003, we hoped we would find antibodies present for the virus, indicating some birds were infected, foug...NRH1 and Wnt signaling come together in convergent extension
... and Neurogenesis (Group Director, Yoshiaki Sasai) show that the product of the gene NRH1 is essential to the regulation of CE movements in the frog. While performing a screen of genes expressed in the posterior neuroectoderm, Sasai et al. identified a gene encoding a protein that showed similarities to p...