Bird song changes sound alarm over habitat fragmentation
...imes and before other indicators - such as genetic markers - show any change," they say. Sharing song types - when a male replies to a rival's song with the same song sequence - with neighbours is common in birds, and is thought to act as a threat signal between males, which would explain why birds have evol...Dog genome sequence and analysis published in Nature
...," said Lander. "Such studies will need many fewer markers than for human studies. It should be like hitting the side of a barn." Mapping human disease-related genes in dogs Breeding programs not only selected for desired traits, they also had the unintended consequence of predisposing many dog breeds to g...Researchers publish dog genome sequence
...man studies, requiring a smaller number of genetic markers and DNA samples collected from the blood or cheek from only a few hundred dogs. Scientists in the canine genetics community worldwide are currently tackling this problem by applying the knowledge gained from SNP analysis to find disease genes. To thi...Plants, too, have ways to manage freeloaders
...inary study, she, Taylor and Povich used molecular markers to identify the different strains of the bacteria Bradyrhizobia that interact with roots of the six species of lupine found on the reserve site. They then tested 10 of these strains to see which were preferred by two of the six lupine species. Workin...NIH funds two new biomedical technology resource centers
...itate collaborative investigations of glycoprotein markers associated with cancer and alcoholism; endocrinology-centered studies including fertilization; and comparative research involving plants and animals. Educational activities will be conducted to disseminate developments in instrumentation and techniqu...Researchers explain why badger culling fails to control cattle TB
...ait (peanuts mixed with treacle) containing colour markers (small indigestible plastic beads) at main badger setts for 12 days, and mapping faeces containing the colour markers, the researchers were able to work out how far badgers ranged in culled compared with non-culled areas. Badger home ranges were cons...Genetic analysis of cavefish reveals more about evolution
...related traits. The researchers found that genetic markers for albinism in the two groups appeared in the same location, suggesting three possibilities: the two cave populations had the same mutation in the same gene, they showed different mutations in the same gene, or they had mutations in distinct but clo...Also in the December 21 Journal of the National Cancer Institute
...s In the future, biomarkers may be used as early markers of cancer and to predict a patient's response to therapy and overall chance of survival. Two studies in the December 21 issue of the Journal of the National Cancer Institute address methodologic issues that surface when studying biomarkers. The c...Micro-gyroscopes can detect cancer
...of DNA or proteins which cause the cancer-specific markers to bind to the surface. The discs are created in a silicon wafer and made to vibrate electronically in two modes. When a cancer-specific marker binds to the surface of a disc, in the pattern of the coating, the uneven weight causes one of the modes...History of human cannibalism eats away at researchers
...ions for researchers using a specific class of DNA markers called SNPs (single nucleotide polymorphisms) to examine genetic associations with diseases or to evaluate historical patterns of human migration. The prion protein gene ( PRNP ) encodes a protein that can abnormally fold and amass in brain tissues t...World Trade Center identifications pushed forensic DNA technology
...m repeats in forensics work. STRs are biological markers in nuclear DNA that are inherited from both parent...x System CODIS used by the FBI, uses 13 of these markers for identification purposes. Shaler's group used up to 16 markers. If sufficient markers matched k...Newer football helmet design may reduce incidence of concussions in high school players
... current understanding of the biomechanics, injury markers and symptoms, and recovery of sports-related concussion is advancing rapidly through research efforts around the world. Potential fruits of these efforts are advances in helmet technology and well-designed and controlled field studies. Clearly at thi...Three-week diet/exercise study shows 50 percent reversal in metabolic syndrome, Type 2 diabetes
...ncluding insulin resistance, high cholesterol, and markers of developing atherosclerosis," Roberts said. "The approach used in this experiment of combining exercise with a diet of unlimited calories is unusual." Low-calorie foods The participants in the current study, who ranged in age from 46 to 76 years ...Study links Alzheimer's disease to abnormal cell division
...vision starts long before amyloid plaques or other markers of the disease appear. Cell division occurs throu... brains from normal mice, looking specifically for markers of cell cycling. They found that, in the AD mouse models, cell cycle-related proteins appeared in n...Genetic study shows humans have pushed orangutans to the brink of extinction
...o hundred orangutans were identified using genetic markers called microsatellites. "We used the DNA information to simulate population history and detect evidence of a population decline," Goossens explains. "The genetic study shows that there is a high risk of extinction of the orangutan in Sabah in the ne...Patterns in genome organization may partially explain how microbial cells work
... New techniques that attach fluorescent "reporter" markers to predetermined spots on chromosomes have indicated that many bacterial genes tend to be found at specific cellular locations. Patterns are not obvious in the sequences of prokaryotic genomes, which led the team led by Palsson to use signal-processi...Chronic drinking and smoking cause both separate and interactive brain injury
...ficant increases of two important brain metabolite markers of cell viability in the frontal and parietal lobes of recovering alcoholics," said co-author Timothy Durazzo. "For most brain regions, these increases were apparent in non-smoking recovering alcoholics, not smoking recovering alcoholics, which su...Use your brain, halve your risk of dementia
...l exercise, participants increased brain chemistry markers in the opposite direction to that seen in Alzheimer's disease. "The interesting point here is that this change was concentrated to the hippocampus, a part of the brain first affected in dementia," said Dr Valenzuela. This is consistent with studies o...Vaccine provides 100 percent protection against avian flu virus in animal study
...ed their blood for anti-viral antibodies and other markers of H5N1-specific immunity. All of the mice immunized with the empty vector vaccine experienced substantial weight loss beginning about three days after exposure to wild-type H5N1, and all were dead within six to nine days of avian flu exposure. In sh......ght common diseases will be accelerated by the new markers reported here. At an ever increasing rate, we are developing the necessary tools and sample collections to make a real difference to the study, diagnosis and, we hope, treatment of diseases such as TB, coronary heart disease, diabetes and rheumatoid ...