Tag: "two" at biology news
A 'private bandwidth' for communication in bats: Evidence from insular horseshoe bats
...is bat emits frequencies falling between the other two
species: if Sardinian R..euryale and R. hipposideros broadcasted the same frequency values as in peninsular Italy, there would be significant risk of overlap and, in turn, confusion in species recognition. By calling respectively at lower and higher ...
Multinational research: protecting ecology means understanding people, too
...e most vexing challenges of the 21st century. The two
call their five-year project "Applied Biodiversity Science: Bridging Ecology, Culture and Governance for Effective Conservation." They put heavy emphasis on applied. They have targeted the U.S.-Mexican border, Central America, the Caribbean basin, th...
Clones on task serve greater good, evolutionary study shows
...ealth"Dworkin paints a hypothetical family tale of two
Arabadopsis families. All the offspring of plant A can grow up in near-identical environments, with pretty much the same water, sunshine and soil. But even in that stable home, little variations occur. One plant in the A family might get a few more m...
Diverse genetic abnormalities lead to NF-κB activation in multiple myeloma
...cant overlap and interplay between them, there are two
separate pathways that lead to activation of NF-κB, the classical pathway and the alternative pathway. Constitutive activation of NF-κB to block apoptosis has been implicated in various types of cancer, but the molecular mechanisms involv...
Interaction of just 2 genes governs coloration patterns in mice
... have found that a simple interaction between just two
genes determines the patterns of fur coloration th...s. "It also illuminates the pathway by which these two
genes interact to produce distinctive coloration. There's reason to believe this simple pathway may ...
Newly created cancer stem cells could aid breast cancer research
...ells with low tumor-making potential. Although the two
types are only slightly different, the cells behav...single human breast tissue sample, splitting it in two
and growing the cells in the two
culture mediums, which select for different cells. Next, he transfo...
Gene regulation, not just genes, is what sets humans apart
...of notes being played in very different ways. In two
major traits that set humans apart from chimps and other primates those involving brains and diet gene regulation, the complex cross-talk that governs when genes are turned on and off, appears to be significantly different. Positive selection, ...
Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
...the study published today, the scientists compared two
different rat strains; the strains possessed virtu...lear genome. Any differences observed between the two
rat strains could be attributed to variation in the mitochondria. When comparing the two
New textbook illuminates the close links between evolutionary and molecular biology
...ate- or graduate-level courses. The site includes two
Web-only chapters, downloadable figures and tables from all chapters, a glossary, author notes with complete reference lists, discussion questions, chapter problems, links to useful Web sites, and other material, all of which are freely available....
Rain forest protection works in Peru
...he last couple of years of the study, primarily in two
areas of the jungle where the forests are accessib...of the damaged Peruvian areas were concentrated in two
regionsin the Madre de Dios, east of Cuzco, and in the central eastern part of the country near Puca...
deCODE discovers cause of major subtype of glaucoma
...psala University in Sweden report the discovery of two
common single letter variations (SNPs) in the sequ...andic and Swedish study cohorts were found to have two
copies of the highest risk variant, putting them at approximately 100 times the likelihood of develo...
Penguins march into new park
...more than 40 small islands, which support the only two
nesting colonies of southern giant petrels on the entire Patagonian coast, as well as the only colonies of Southern American fur seals. Other denizens of this coastal oasis include the endangered Olrogs gull, the white-headed steamer duck, and almost...
Antioxidant overload may underlie a heritable human disease
...the disease had been linked to mutations in one of two
genes, the mechanism responsible remained mysterious. The researchers now show that mice with one of the mutant genes, B-crystallin, specifically in the heart develop the same symptoms seen in human patients, including heart enlargement, progressiv...
A unique arrangement for egg cell division
...body, an oocyte does not divide equally to produce two
identical daughter cells. Instead, it undergoes a ...e Expression Unit at EMBL, all other cells contain two
centrosomes from where the microtubules originate. They predetermine the bipolar structure of the sp...
New test improves detection of liver cancer
...virus infection, they found that the quantities of two
particular sugar groups that appear on the blood proteins varied according to the stage of the disease. Furthermore, these values correlated with the size of the tumor. The ratio of these values forms the basis of the new blood test. The researchers...
Brain blood flow gives clues to treating depression
...rugs failed. Interestingly, patients response to two
different classes of antidepressant medicines that target different neurotransmitters is associated with a similar improvement in cerebral blood flow, he noted. However, cerebral blood flow continued to deteriorate in patients who responded to electr...
Acute sleep deprivation leads to changes in nighttime urine production for men and women
... males; ten females; 19-35 years of age) underwent two
24-hour circadian in-patient studies under standar...Participants were sleep deprived during one of the two
sessions in a randomized sequence. Their blood pressure and heart rate were recorded every hour usin...
Study finds gender differences in renal and other genes contributing to blood pressure
... 60,000 genotypes at 35 gene locations involved in two
major pathways regulating blood pressure, kidney o...of assessing genetic variants of genes involved in two
major blood pressure regulation pathways to identify gender differences in genetic contribution to b...
Satellite tracking reveals threats to Borneo pygmy elephants
...y elephants were darted and outfitted with collars two
years ago by the Sabah Wildlife Department with WWF assistance, after tracking the elephants on foot through the dense jungle was found too difficult over long periods. The collars sent GPS locations to a WWF computer via satellite as often as once ...
Testosterone replacement therapy: How safe for aging men?
...cious, freely moving rats. Urine was collected for two
hours and urinary protein excretion was determined. The researchers found that blood pressure was significantly higher in testosterone-supplemented male SHR as compared with intact rats, whereas castration did not alter blood pressure levels. Te...
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